From BIOSCI-REQUEST@net.bio.net  Mon Aug  2 22:44:00 1993
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From: simpson@biovx1.DNET.NASA.GOV
To: "rna@net.bio.net"@EAST.DNET.NASA.GOV
Subject: Subjects for discussion

Dear Netters:

SInce this is a new newsgroup, we have to establish the areas of
discussion. I originally wanted to have a newgroup just for my own research
interest, RNA editing, but soon realized that cross communication with
other RNA fields would be extremely valuable. I propose that RNA
splicing, editing and ribozyme activities be some of the topics to be
discussed. But anything related to RNA research is fair game. 

What are your ideas for making this a viable newsgroup?

Larry Simpson


From BIOSCI-REQUEST@net.bio.net  Tue Aug  3 01:28:49 1993
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Date: Tue, 03 Aug 1993 10:28:37 +0100 (MET)
From: EDWIN TEN DAM <BEMDAM@rulgl.LeidenUniv.nl>
Subject: SP6 protocol ?
To: rna
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Greetings all!

Well, let me say what i would like to see in a (an?) RNA group. I think
RNA structure prediction and testing is a very important issue for anyone
working with RNA, so things like computer prediction and structure probing
will be of interest. And ofcourse this would be the place to ask for RNA
specific methods and protocols. Let's kick that one of with a question of
my own:

I am making some capped SP6 transcripts for in vitro translation studies, but
get very inconsistent yields of messenger. Any favorite protocols out there?

I'd be happy to summarize, but to get this group going just post to group.
(then we can see who are out there)

Thanks!

Edwin ten Dam -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- bemdam@rulgl.leidenuniv.nl

From BIOSCI-REQUEST@net.bio.net  Tue Aug  3 08:25:11 1993
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From: davis@adenosine.pharm.utah.edu (Darrell R. Davis)
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To: rna
In-Reply-To: kristoff@net.bio.net's message of 30 Jul 93 05:42:14 GMT
Subject: New prototype newsgroup - RNA (rna@net.bio.net)
Cc: davis@adenosine.pharm.utah.edu


subscribe


From BIOSCI-REQUEST@net.bio.net  Tue Aug  3 11:19:02 1993
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Date: Tue, 3 Aug 93 11:20:46 PDT
From: brianw@cal (Brian Wimberly)
Message-Id: <9308031820.AA02181@cal.scripps.edu>
To: rna
Subject: topics
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Content-Length: 725

My research interests are centered on the experimental
determination at atomic resolution of unusual RNA structures
and protein-RNA interactions; I'm an NMR person out of Tinoco's
lab.

As one of the very few people determining high-resolution
RNA structures,
I would like to try to discover interesting
new systems for structural study from the more functionally
oriented netters, as well as discuss structure prediction
and determination with any of the more biophysically-oriented
who wander into the discussion.
 
But my main point is to get both structural and biological
people talking to each other. I will try to get more
structural and theoretical people to subscribe.

Brian Wimberly
The Scripps Research Institute

From BIOSCI-REQUEST@net.bio.net  Tue Aug  3 11:46:42 1993
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From: mwd@carina.cray.com (Mark Dalton)
Message-Id: <9308031846.AA16366@calamity>
Subject: Re: topics (Protein-NA interactions)
To: rna
Date: Tue, 3 Aug 93 13:46:34 CDT
X-Mailer: ELM [version 2.3 PL11b-CRI]

Hi!

	This is from another e-mail server I subscribe to:

I thought it may be helpful.  I will build a list of ftp sites
for RNA structure prediction/display software and post it to the
group.  If you have any sites or software let me know.  I will
summerize it by the end of the week.

Thanks!

Mark

Here is the message about Protein-NA interactions:
Subject: Re: DNA-protein interactions?
To: bishop@lisboa.ks.uiuc.edu
Date: Mon, 2 Aug 1993 16:48:52 -0500 (CDT)
Cc: chemistry@osc.edu
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Precedence: bulk

Tom

The following citations might interest you:

1.  There was a recent issue of CURRENT OPINION IN STRUCTURAL BIOLOGY
dedicated to "Protein-Nucleic Acid Interactions".

Vol. 3 (#1)  [1993]

Particularly the article entitled "Protein-NA interactions by NMR" by
Bob Kaptein, which appears on p. 50 is quite interesting.

2.  Kothekar, V  FEBS Lett. 274, 217 (1990)  Computer simuation of the
Zinc finger motifs.

3.  A paper from Andy McCammons's group on the "Possion-Boltzmann
analysis of lambda represson-operator interactions" was published in
Biophys. J. 63, 1280.

Hope this helps!
Cheers
-raman
--
C.S.Raman                                 raman@bioc01.uthscsa.edu - Internet
UNIX Programming & Administration         70412.2354@compuserve.com - CIS
SPARC & SGI Systems                       raman@hermes.chpc.utexas.edu - CHPC
Department of Biochemistry                craman@launchpad.unc.edu
UTHSCSA
7703 Floyd Curl Dr.                       (210) 567-6623   [Tel]
San Antonio, TX 78284-7760                (210) 567-6595   [Fax]

-- 
Mark Dalton                   AUG-GCU-AGA-AAG                  H      
Cray Research, Inc.           M   A   R   K                    |     
Eagan, MN 55121                                  CH3-S-CH2-CH2-C-COOH
Internet: mwd@cray.com                                         |   
(612)683-3035                                                  NH2

From BIOSCI-REQUEST@net.bio.net  Tue Aug  3 12:58:36 1993
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	Tue, 3 Aug 93 12:58:29 PDT
Date:    Tue, 3 Aug 93 12:58:29 PDT
From: tinoco%lcbvax.hepnet@Lbl.Gov
Message-Id: <930803125829.2022f99e@Lbl.Gov>
Subject: RNA newsgroup
To: rna
X-St-Vmsmail-To: LBL::"rna@net.bio.net"
X-St-Vmsmail-Cc: TINOCO

	I would like to be put on the distribution list for the RNA
newsgroup. My main interest is structure of RNA and its relation to
function.
	Thank you.		I. Tinoco

From BIOSCI-REQUEST@net.bio.net  Tue Aug  3 13:18:00 1993
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From: ierardi@flash.usc.edu (D Ierardi)
Message-Id: <9308032017.AA19828@flash.usc.edu>
To: mwd@carina.cray.com, rna
Subject: Re: topics (Protein-NA interactions)

These are pretty well known. I've pulled them out of my 
gopherrc.

Doug
-------------------
Name=IUBio Biology Archive, Indiana University (experimental)
Host=ftp.bio.indiana.edu

Name=Computational Molecular Biology
Host=megasun.BCH.UMontreal.CA

Name=EMBnet BioInformation Resource EMBL
Host=felix.embl-heidelberg.de

  -- Databases: rRNA(ssu), tRNA, smallRNA, berlin

Name=SDSC's Computational Biology Gopher 
Host=osprey.sdsc.edu

Name=molecular biology  
Host=life.anu.edu.au

Name=Ribosomal Database Project (Argon Natl. Lab) 
Path=ftp:info.mcs.anl.gov@/pub/RDP/

  -- Databases: rRNA(ssu,lsu)


From BIOSCI-REQUEST@net.bio.net  Fri Aug  6 17:38:29 1993
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From: mwd@carina.cray.com (Mark Dalton)
Message-Id: <9308070038.AA00240@calamity>
Subject: RNA software -ftp sites
To: rna
Date: Fri, 6 Aug 93 19:38:20 CDT
X-Mailer: ELM [version 2.3 PL11b-CRI]


Hi!  As I mentioned I would compile a list of FTP sites for RNA structure.
Well here is what have so far:
	I also have compiled a list of references for RNA research.  If
someone has access to an ftp site.  Or I can see if I can have them put
out on lenti.med.umn.edu.

nrcbsa.bio.nrc.ca:
	-Michael Zukers software for folding with multiple suboptimal
	 scores, viewing of structures and more.
    Here is his directory, I have not seen this on the other ftp lists
    and Michael was all supportive in posting it. (^8
    -rw-r--r--   1 912   900      1084947 Feb 19 11:59 3d_align.tar.Z
    drwxr-xr-x   2 912   900         4096 Jul 12 19:48 ABJ
    -rw-r--r--   1 912   900      1385715 Jun 22 12:51 XRNA.tar.Z
    -rw-r--r--   1 912   900      2070835 Oct 13  1992 align.tar.Z
    -rw-r--r--   1 912   900        29778 Apr  1 17:18 boxplot.tar.Z
    -rw-r--r--   1 912   900       264235 Feb 23 16:06 compbc_dir.tar.Z
    drwxrwxrwx   2 912   900          512 Apr 27 17:02 donor
    -rw-r--r--   1 912   900       856965 Mar 26  1992 ecoli16s.hex.Z
    -rw-r--r--   1 912   900         9735 Dec 18  1992 ftp.log
    -rw-r--r--   1 912   900      2723437 Jan 19  1993 mfold-2.0.tar.Z
    -rw-r--r--   1 912   900      1861467 Jul 29 08:11 mfold-2.2-binaries.tar.Z
    -rw-r--r--   1 912   900       887847 Jan 28  1993 mfold-2.2.tar.Z
    -rw-r--r--   1 912   900       669424 Jan  4  1993 mfold-cstack.tar.Z
    -rw-r--r--   1 912   900      2197599 Jun  4  1992 mfold-dec-2.0.tar.Z
    -rw-r--r--   1 912   900       638643 Jun 15 11:32 mfold-dec-2.2.tar.Z
    -rw-r--r--   1 912   900        56966 May 26 14:20 mfold-phylo.tar.Z
    -rw-r--r--   1 912   900      1398191 May 11  1992 mfold-sun-2.0-nodot.tar.z
    drwxr-xr-x   7 912   900          512 Jul 16 13:57 mfold-sun-2.2
    -rw-r--r--   1 912   900       465183 Jul 16 13:58 mfold-sun-2.2.tar.Z
    -rw-r--r--   1 912   900       862691 Dec 20  1992 mfold-vax-2.0.tar.Z
    -rw-r--r--   1 912   900        99815 May 17 15:30 naview.tar.Z
    -rw-r--r--   1 912   900       292949 Jul 23  1991 newtree.tar.Z
    -rw-r--r--   1 912   900      4005656 Nov 15  1991 phylip.tar.Z
    -rw-r--r--   1 912   900      2025073 Oct 30  1991 xmfold-2.0.tar.Z
    
ftp.bio.indiana.edu:
	Mac RNA structure prediction.
		Mufold
	Mac RNA structure display.
		LoopViewer, LoopDLoop

megasun.BCH.UMontreal.CA:
	GDE (Genetic Data Enviroment) - LoopTool 

felix.embl-heidelberg.de:
	Databases: rRNA(ssu), tRNA, smallRNA, berlin

life.anu.edu.au:

info.mcs.anl.gov:
	Ribosomal Database Project (Argon Natl. Lab)

ncifcrf.gov:
	RNA information: /pub/shapiro (Bruce Shapiro)
			 /pub/shuyun/newfold
			 /pub/shuyun/sigfold

lenti.med.umn.edu:

golgi.harvard.edu:
	GDE's primary home (Steven Smith)

ftp.psc.edu:

ftp.itc.univie.ac.at:
	ViennaRNA.
	  The Vienna RNA Package, a new package for folding and comparing
	  RNA secondary structure.
		RNAfold         predict secondary structures
		RNAeval         evaluate energy for given sequence and structure
		RNAheat         calculate melting curves
		RNAdistance     compare secondary structures
		RNApdist        compare ensembles of secondary structures
		RNAinverse      find sequences folding into given structures
		AnalyseSeqs     analyse sequence data
		AnalyseDists    analyse distance matrices

-- 
Mark Dalton                   AUG-GCU-AGA-AAG                  H      
Cray Research, Inc.           M   A   R   K                    |     
Eagan, MN 55121                                  CH3-S-CH2-CH2-C-COOH
Internet: mwd@cray.com                                         |   
(612)683-3035                                                  NH2

From BIOSCI-REQUEST@net.bio.net  Wed Aug 11 12:21:30 1993
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Date: Wed, 11 Aug 1993 14:21:26 -0500
From: rdp@phylo.life.uiuc.edu (Ribosomal Database Project)
Message-Id: <199308111921.AA10090@phylo.life.uiuc.edu>
To: rna
Subject: RDP Release 3.0
Cc: rdp@phylo.life.uiuc.edu

The Ribosomal Database Project (RPD) Release 3.0 is now available. A brief
list of the changes and new items are:

1. The E-mail and FTP servers have now moved to the University of Illinois.
   The addresses to be used are:

   E-mail:    server@rdp.life.uiuc.edu
   FTP:       rdp.life.uiuc.edu
   Gopher:    rdpgopher.life.uiuc.edu

2. File names have been changed to more accurately describe their contents:
           Old name               New name
        -------------------     -------------------
        SSU_list.alpha          SSU_Prok.alpha
        SSU_list.phylo          SSU_Prok.phylo
        SSU_list_rep.phylo      SSU_rep_Prok.phylo
        SSU.aln                 SSU_Prok.aln
        SSU.gb                  SSU_Prok.gb
        SSU_Euks.aln            SSU_Euk.aln
        SSU_Euks.gb             SSU_Euk.gb
        SSU_rRNA_rep.gb         SSU_rep_Prok.gb
        SSU_rRNA.newick         SSU_Prok.newick
        SSU_rRNA.printable      SSU_Prok.printable
        SSU_rRNA.ps             SSU_Prok.ps
   Other file name changes are listed in the 00RELEASE_NOTES.3.0 file.

3. The number of sequences included in the SSU_Prok.gb (small ribosomal
   subunit, prokaryotic organisms - GenBank format) file increases from
   651 to 1379.

4. A file listing the organisms contained in the SSU_Euk alignment has been
   created: SSU_rRNA/SSU_Euk.alpha. A file listing the organisms contained
   in both the SSU_Prok and SSU_Euk alignments has been created: SSU.alpha.

5. The SSU_Euk.gb LOCUS names have been changed to official RDP short-ID's
   (the SSU_Euk.aln file was similarly modified). No new sequences have been
   added to the SSU_Euk alignment.

6. Changes in RDP short-ID's or organism names are also listed in the
   00RELEASE_NOTES.3.0 file.

7. The phylogenetic tree for small subunit prokaryotic organisms has been
   updated to contain 648 sequences. This tree represents the SSU_Prok
   data included in RDP Release 2.0 (excluding 3 sequences removed from
   the 3.0 Release). A tree corresponding to Release 3.0 data will be
   posted as soon as possible.

8. Files listing the available LSU secondary structure files and references
   have been added by Dr. Robin Gutell; they are in the LSU_rRNA/sec_struct
   directory.

9. Two new commands are available from the email server: CHECK_CHIMERA
   and ALIGN_SEQUENCE. Read the help files for these specific commands
   or, alternatively, send a message to server@rdp.life.uiuc.edu with
   'help complete' as the text to obtain information about all of the
   email server commands.

We encourage the obtaining and reading of the 00RELEASE_NOTES.3.0 file
to learn about other changes and additions not specifically listed here.
To get this file via email,
    mail server@rdp.life.uiuc.edu
    message: get 00RELEASE_NOTES.3.0

To get the file via ftp,
   ftp rdp.life.uiuc.edu
   cd pub/RDP
   get 00RELEASE_NOTES.3.0

Any questions may be mailed to rdp@phylo.life.uiuc.edu.
 
- Bonnie L. Maidak, Ph.D.
Database Manager, RDP 
Dept. Microbiology
Univ. of Illinois

From BIOSCI-REQUEST@net.bio.net  Mon Aug 16 20:15:07 1993
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From BIOSCI-REQUEST@net.bio.net  Mon Aug 23 06:52:02 1993
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Roxanne Hall                    Mail: roxanne@odin.mda.uth.tmc.edu
GCG Administrator                 Or: roxanne@129.106.3.17
Department of Biomathematics,  Phone: (79)2-2604
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*	Juergen Suehnel					        *
*	Biocomputing                                         	*
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*	D-07708 Jena                                            *
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From BIOSCI-REQUEST@net.bio.net  Wed Nov 17 14:38:50 1993
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Date: Wed, 17 Nov 93 16:36 CDT
From: Rock Pulak <RAPULAK@macc.wisc.edu>
Subject: H19 RNA
To: RNA
X-Vms-To: IN%"rna@net.bio.net",RAPULAK

I found the paper by Hao et al., Nature 365, 764-767 (1993)
worthy of a closer look.  As I understand it, the H19 gene
encodes a polyA containing mRNA (I presume this is a polII
transcript) that is abundant and does not have much of an
ORF.  In fact, going through some of the references, it
appears that a pretty good arguement could be made that
this mRNA does no code for a protein.  One question
that comes to mind is what does this mRNA do, if anything?
Well, Hao et al., show that maybe H19 is a tumor suppressor
gene.  I think the data looks pretty good.  Anyone
disagree?  I'd be interested in hearing why you might
think so?  Also if this mRNA does function in the cell,
how does it do it?  I didn't come across any in silico
analysis of the sequence and so I don't know if the mRNA
can be folded into some exotic secondary structure.
Any thoughts?
 
Looks like H19 is another of a small but growing list of
mRNA-like molecules lacking much of an open-reading frame.
I wonder if they are partially translated.  What I mean is,
I wonder if they do whatever they do by interacting with
ribosomes, albeit, in a non-polypeptide synthesizing
interaction.   Any comments?
 
rock pulak
uw-madison

From BIOSCI-REQUEST@net.bio.net  Wed Nov 17 20:59:49 1993
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Date: Wed, 17 Nov 93 22:01 CDT
From: Rock Pulak <RAPULAK@macc.wisc.edu>
Subject: H19
To: RNA
X-Vms-To: IN%"rna@net.bio.net",RAPULAK

David McPheeters replied to my comments and questions
about H19 RNA that
 
>Perhaps the H19 RNA is an "antisense" regulator
>of processing/transport/translation of another gene.
 
If this is true, would this be the "first" example in
eukaryotes?  (There is a story developing in the regulation
of the lin-14 gene in C. elegans that strongly suggests
lin-14 protein levels are regulated by an antisense
RNA; any other examples out there?)
 
If H19 is an "antisense regulator", what would be the
easiest way to identify the gene or genes it is regulating?
Seems the obvious experiment is to use the H19 sense
transcript as a probe.  Are there any other ways of
potentially identifying the interacting genes (obvious and
not-so-obvious)?
 
rock pulak
uw-madison

From BIOSCI-REQUEST@net.bio.net  Sat Nov 20 13:18:52 1993
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Date: Sat, 20 Nov 93 15:17 CDT
From: Rock Pulak <RAPULAK@macc.wisc.edu>
Subject: H19
To: RNA
X-Vms-To: IN%"rna@net.bio.net",RAPULAK

thanks B. Bass,
 
The Lengyel review in PNAS is very interesting.  The idea that
H19 tumour suppressor activity results from stimulating a
dsRNA dependent protein kinase activity is interesting.  However,
would you predict that any antisense RNA should have the same
affect?  In other words, the experiments by Hao et al., Nature
365,764-767 should be repeated with a control cDNA that makes an
antisense message to some garden variety house-keeping gene.
The prediction is that there would be a loss of the cellular
transformation phenotype.  True?
 
Rock Pulak
UW-Madison
rapulak@macc.wisc.edu

From BIOSCI-REQUEST@net.bio.net  Sat Nov 20 23:18:25 1993
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subscribe   v

From BIOSCI-REQUEST@net.bio.net  Sun Nov 21 09:06:25 1993
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From BIOSCI-REQUEST@net.bio.net  Sun Nov 21 18:59:10 1993
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To: rna
From: jes2u@maxwell.acc.virginia.edu
Subject: unsubscribe

unsubscribe

John E. Smith III                                jes2u@virginia.edu
Biology Dept./Gilmer Hall                          
University of Virginia                          lab phone (804)982-5485
Charlottesville, VA  22903-2477


From BIOSCI-REQUEST@net.bio.net  Tue Nov 23 09:01:18 1993
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Date: Tue, 23 Nov 93 10:58 CDT
From: Rock Pulak <RAPULAK@macc.wisc.edu>
Subject: snurposomes
To: RNA
X-Vms-To: IN%"rna@net.bio.net",RAPULAK

We recently had a journal club where the discussion leader
presented some of J. Gall's data on particles in the nucleus
of certain cells that are abundant and appear to contain
various components of the splicing machinery.  (See: J.G.
Gall, Science, vol.252,1499-1500)  Gall calls these particles
snurposomes and identifies three classes on the basis of
size and morphology.  One question that came up was, is there
any evidence against the preassembly of splicing
components (like ribosomes)?  Recall that the splicing
pathway is usually presented as an ordered series of
interactions between the substrate pre-mRNA and various
components necesary for splicing rather than the view
we usually get for translation where the ribosome, with
all its components, binds and does its thing.  Do you
see what I'm saying?  Is it actually a pre-assembled
splicosome that binds the pre-mRNA as a unit, like a ribosome,
or do the various components of the splicing machinery
come in, do their thing, and then leave when the next
splicing component comes in to do its thing?
 
Rock Pulak
UW-Madison
rapulak@macc.wisc.edu

From BIOSCI-REQUEST@net.bio.net  Mon Jan  3 13:03:23 1994
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Please add me to your e-mailings.
Carol Lutz


From BIOSCI-REQUEST@net.bio.net  Fri Jan  7 16:56:52 1994
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From: kristoff@net.bio.net (David Kristofferson)
Message-Id: <9401080056.AA01912@net.bio.net>
To: rna
Subject: ALL QUIET ON THE RNA FRONT????  One month left!


The voting process on the RNA group will begin on 1 Feb 94.  There
hasn't been much use of this group lately so I am not so optimistic
that it will pass, but that is obviously up to the readership.

				Sincerely,

				Dave Kristofferson
				BIOSCI/bionet Manager

				biosci-help@net.bio.net


From BIOSCI-REQUEST@net.bio.net  Sat Jan  8 07:36:48 1994
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Date: Sat, 8 Jan 94 10:46:22 -0500
From: jnolan@crab.bio.indiana.edu (Jim Nolan)
Message-Id: <9401081546.AA11562@crab.bio.indiana.edu>
To: rna
Subject: ALL QUIET...

I recently signed up for the RNA net. My feeling is that lots of people
knew there was supposed to be an RNA user group, but nobody knew how
to subscribe, as evidenced by all the subscribe letters to the net.
I kept looking for it to appear on the network news reader.

We'd better use this thing before we lose it. I work on cross-linking
of RNAse P RNA to tRNA, which I happen to find pretty interesting.  I'd be
interested in hearing about anything related to RNA structure or calatysis.
It seems like there is plenty of exciting and interesting work to talk about
in our field. Let's start talking.

PS Tell your co-workers how to subscribe.
Jim
+-----------------------------------------------------------+
|              Jim Nolan                                    |
|              jnolan@bio.indiana.edu                       |
|              Dept. Biology Indiana University             |
+-----------------------------------------------------------+


From BIOSCI-REQUEST@net.bio.net  Sun Jan  9 17:19:02 1994
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Date: Sun, 09 Jan 1994 20:18:30 -0500 (EST)
From: QUERY001@wccf.mit.edu
Subject: Boston Area RNA Meeting
To: rna
Message-Id: <01H7HP0FB5ZM8WW6XN@wccf.mit.edu>
Organization: Mass. Inst. Tech. - Whitaker College
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_____________________________________________________
BOSTON AREA RNA MEETING
_____________________________________________________
	Cheryl Wellington
	Harvard Medical School
	"c-fos Messenger RNA Decay"
	
	Shuguang Zhang
	Massachusetts Institute of Technology
	"A Proposed Pairing Mode Between Nucleic Acids 
          and beta-Stranded Peptides"
_____________________________________________________

*** 6:30 PM ***
Note Time Change


Monday,  January 10, 1994
Sixth Floor Conference Room
Center for Cancer Research (Building E17)
Massachusetts Institute of Technology
40 Ames Street, Cambridge MA


All interested parties are welcome.  Contact Charles Query (253-6458; fax 
253-3867) or Gene Huh (253-6424; fax 253-8357) regarding any questions.  The 
next RNA Meeting will be held on Monday, February 7, 1994.
_____________________________________________________

From BIOSCI-REQUEST@net.bio.net  Mon Jan 10 10:36:26 1994
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From: schmitz@picasso.ucsf.EDU
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To: rna

Hello "RNA community",

I want to thank Jim Nolan for the encouragement....we could make more out of this RNA network. 

I have a question regarding dialysis of small volume RNA samples for NMR purposes, i.e., 250ul of 2mM that needs a quick and efficient buffer change.

Are there any cool procedures more different than the old dialysis bags that people want to share ?

What experiences have people made with these Sialomed Spin BioDialyzers that seem pretty nifty but also expensive ? Do they work...?

I would appreciate any input on this.

Uli Schmitz
UC,San Francisco
Dept. Pharm. Chem
schmitz@picasso.ucsf.edu

From BIOSCI-REQUEST@net.bio.net  Mon Jan 10 11:46:49 1994
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Date: Mon, 10 Jan 94 12:49:44 -0700
From: davis@adenosine.pharm.utah.edu (Darrell R. Davis)
Posted-Date: Mon, 10 Jan 94 12:49:44 -0700
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To: rna
Subject: RNA dialysis



on Mon, 10 Jan 1994 10:36:23 -0800,
schmitz@picasso.ucsf.EDU said:
>> Posted-Date: Mon, 10 Jan 1994 10:36:23 -0800

>> I want to thank Jim Nolan for the encouragement....we could make more out of this RNA network. 

>> I have a question regarding dialysis of small volume RNA samples for NMR purposes, i.e., 250ul of 2mM that needs a quick and efficient buffer change.

>> Are there any cool procedures more different than the old dialysis bags that people want to share ?


I will make a contribution to get the RNA net rolling.

Regarding dialysis: We use a couple "devices" for small scale
dialysis.  We have made a flow through device by machining a large
disc (hockey puck) of lucite.  The cell is pretty simple in design,
but kind of hard to explain in a few words.

A second method is *much* simpler.  Take a 1.5 mL eppendorf tube.
Heat the big end of a pasteur pipet in a bunsen flame and use the
pipet to "punch out" the center of the eppendorf cap.  The resulting
modifed tube can be closed, but of course has a hole in the middle.
You then put your sample in the eppendorf, place a small square of
dialysis tubing across the top and "close" the cap.  The dialysis
tubing is sealed, forming a window across the top of the tube.  You
can then dialyze your sample by clamping the tube horizontally into a
reservoir of buffer.  Sample recoveries are also good because you can
spin the sample in the same tube without transfer.

This is really about as good as our flow cell and much easier to
handle.

RNA and NMR, I see that the insanity is spreading.


--------------------------------------------------------------
     
Darrell R. Davis     
Assistant Professor  
Medicinal Chemistry  
University of Utah  
SLC,  UT  84112  
(801) 581-7006  
FAX:  581-7087  
davis@adenosine.pharm.utah.edu  
--------------------------------------------------------------



From BIOSCI-REQUEST@net.bio.net  Mon Jan 10 13:44:11 1994
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Subject: RNase H
To: rna
Date: Mon, 10 Jan 1994 14:44:09 -0700 (MST)
From: "Michael van Waes" <bi__mvw@selway.umt.edu>
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 Dear Netters:
    I was wondering if any of you pseudo-masochistic RNA scientists out there
 know something about the specificity of RNase H.
 The literature seems kind of vague. There is a paper by Almehdi et al. in
 Oregon, in which they managed to get a single clip on 16S rRNA using 
 regular cDNA probes. I am trying to reproduce it, but with different probes, 
 but I can't find a pattern to predict where the cut is going to be.

    The only other way to get single clips with RNase H seems to be by using
    chimeric DNA/RNA oligos (mucho $$$$$). Anybody have any thoughts on a cheap
    route to do this, i.e. single, site-specific clips on RNA ???. Perhaps a
    ribozyme?? Any thoughts/ideas appreciated.


    Thanks a lot and Happy New Year!!!


           _________________________________________________________________
	   Michael van Waes	        |
	   Div. of Biol. Sci.	        |  "I never worry about the future, 
	   Univ. of Montana	        |       ... it comes soon enough. "
	   Phone: 406-243-5733  	| 
	   bi__mvw@selway.umt.edu	|            	Albert Einstein.
	   -----------------------------------------------------------------

From BIOSCI-REQUEST@net.bio.net  Mon Jan 10 18:36:03 1994
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Date: Mon, 10 Jan 94 18:36:01 PST
From: BIOSCI Administrator <biosci-help@net.bio.net>
To: jnolan@crab.bio.indiana.edu (Jim Nolan)
Cc: rna
Subject: Re: ALL QUIET...
In-Reply-To: Your message of Sat, 8 Jan 94 10:46:22 -0500
Message-Id: <CMM.0.90.2.758255761.kristoff@net.bio.net>

> I recently signed up for the RNA net. My feeling is that lots of people
> knew there was supposed to be an RNA user group, but nobody knew how
> to subscribe, as evidenced by all the subscribe letters to the net.
> I kept looking for it to appear on the network news reader.
> 
> We'd better use this thing before we lose it. I work on cross-linking
> of RNAse P RNA to tRNA, which I happen to find pretty interesting.  I'd be
> interested in hearing about anything related to RNA structure or calatysis.
> It seems like there is plenty of exciting and interesting work to talk about
> in our field. Let's start talking.
> 
> PS Tell your co-workers how to subscribe.
> Jim
> +-----------------------------------------------------------+
> |              Jim Nolan                                    |
> |              jnolan@bio.indiana.edu                       |
> |              Dept. Biology Indiana University             |
> +-----------------------------------------------------------+
> 
> 

To subscribe all one need do is send the message

subscribe rna

to biosci-server@net.bio.net.  To cancel your e-mail sub send the
message

unsubscribe rna

to biosci-server@net.bio.net.  In both cases leave the Subject: line
of your message blank and put the commands in the main body of the
message.

The discussion leader for the group is Larry Simpson at UCLA.  I will
need to get a final newsgroup charter (to put out for a vote) from
either him or his designated successor sometime during the next month.

				Sincerely,

				Dave Kristofferson
				BIOSCI/bionet Manager

				biosci-help@net.bio.net


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list.


MAILING LIST NAME          USENET Newsgroup Name
-----------------          ---------------------
ACEDB-SOFT                 bionet.software.acedb
AGEING                     bionet.molbio.ageing
AGROFORESTRY               bionet.agroforestry
ARABIDOPSIS                bionet.genome.arabidopsis
BIOFORUM                   bionet.general
BIO-INFORMATION-THEORY +   bionet.info-theory
BIONAUTS                   bionet.users.addresses
BIONEWS **                 bionet.announce
BIO-JOURNALS **            bionet.journals.contents
BIO-MATRIX                 bionet.molbio.bio-matrix
BIO-SOFTWARE               bionet.software
BIOTHERMOKINETICS          bionet.metabolic-reg
CELL-BIOLOGY               bionet.cellbiol
CHLAMYDOMONAS              bionet.chlamydomonas
CHROMOSOMES                bionet.genome.chromosomes
COMPUTATIONAL-BIOLOGY **   bionet.biology.computational
DROSOPHILA                 bionet.drosophila
EMBL-DATABANK              bionet.molbio.embldatabank
EMPLOYMENT                 bionet.jobs
GDB                        bionet.molbio.gdb
GENBANK-BB                 bionet.molbio.genbank
GENETIC-LINKAGE            bionet.molbio.gene-linkage
HIV-MOLECULAR-BIOLOGY      bionet.molbio.hiv
HUMAN-GENOME-PROGRAM       bionet.molbio.genome-program
IMMUNOLOGY                 bionet.immunology
INFO-GCG                   bionet.software.gcg
JOURNAL-NOTES              bionet.journals.note
METHODS-AND-REAGENTS       bionet.molbio.methds-reagnts
MOLECULAR-EVOLUTION        bionet.molbio.evolution
MYCOLOGY                   bionet.mycology
NEUROSCIENCE               bionet.neuroscience
N2-FIXATION                bionet.biology.n2-fixation
PHOTOSYNTHESIS             bionet.photosynthesis
PLANT-BIOLOGY              bionet.plants
POPULATION-BIOLOGY         bionet.population-bio
PROTEIN-ANALYSIS           bionet.molbio.proteins
PROTEIN-CRYSTALLOGRAPHY    bionet.xtallography
RAPD                       bionet.molbio.rapd
SCIENCE-RESOURCES **       bionet.sci-resources
TROPICAL-BIOLOGY           bionet.biology.tropical
VIROLOGY                   bionet.virology
WOMEN-IN-BIOLOGY           bionet.women-in-bio
YEAST                      bionet.molbio.yeast

+ full name is BIOLOGICAL-INFORMATION-THEORY-AND-CHOWDER-SOCIETY

** Note that newsgroups flagged with ** are moderated, i.e., postings
are directed to a moderator (editor) who later forwards messages
(possibly edited or condensed) to the newsgroup.


List of BIOSCI Newsgroup Topics
-------------------------------

MAILING LIST NAME            TOPIC
-----------------            -----
ACEDB-SOFT                   Discussions by users and developers of genome
                                databases using the ACEDB software.
AGEING                       Discussions about ageing research
AGROFORESTRY                 Discussions about agroforestry research
ARABIDOPSIS                  Newsgroup for the Arabidopsis Genome Project
BIOFORUM                     Discussions about biological topics for
                                which there is not yet a dedicated newsgroup
BIOLOGICAL-INFORMATION-
  THEORY-AND-CHOWDER-SOCIETY Applications of information theory to biology
BIONAUTS                     Question/answer forum for help using
                                electronic networks, locating e-mail
                                addresses, etc.
BIONEWS **                   General announcements of widespread
                                interest to biologists
BIO-JOURNALS **              Tables of Contents of biological journals
BIO-MATRIX                   Applications of computers to biological databases
BIO-SOFTWARE                 Information on software for the biological
                                sciences
BIOTHERMOKINETICS            Discussions about the kinetics, thermodynamics
                                and control of biological processes at
                                the cellular level
CELL-BIOLOGY                 Discussions about cell biology including
                                cancer research at the cellular level
CHLAMYDOMONAS                Discussions about the biology of the green alga
                                Chlamydomonas and related genera
CHROMOSOMES                  Discussions about mapping and sequencing
                                of eucaryote chromosomes
COMPUTATIONAL-BIOLOGY **     Mathematical and computer applications in biology
DROSOPHILA                   Discussions about biological research on
                                Drosophila
EMBL-DATABANK                Messages to and from the EMBL database staff
EMPLOYMENT                   Job opportunities in biology (see BIOSCI
                               FAQ *before* posting commercial job openings)
GDB                          Messages to and from the Genome Data Bank staff
GENBANK-BB                   Messages to and from the GenBank database staff
GENETIC-LINKAGE              Newsgroup for genetic linkage analysis
HIV-MOLECULAR-BIOLOGY        Discussions about the molecular biology of HIV
HUMAN-GENOME-PROGRAM         NIH-sponsored newsgroup on human genome issues
IMMUNOLOGY                   Discussions about research in immunology
INFO-GCG                     Discussions about the GCG sequence
                               analysis software
JOURNAL-NOTES                Practical advice on dealing with professional
                               journals
METHODS-AND-REAGENTS         Requests for information and lab reagents
MOLECULAR-EVOLUTION          Discussions about research in molecular evolution
MYCOLOGY                     Discussions about research on filamentous fungi
NEUROSCIENCE                 Discussions about research in the neurosciences
N2-FIXATION                  Discussion about biological nitrogen fixation
PHOTOSYNTHESIS               Discussions about photosynthesis research
PLANT-BIOLOGY                Discussions about research in plant biology
POPULATION-BIOLOGY           Discussions about research in population biology
PROTEIN-ANALYSIS             Discussions about research on proteins and
                                messages for the PIR and SWISS-PROT databank
                                staffs.
PROTEIN-CRYSTALLOGRAPHY      Discussion about crystallography of macromolecules
                                and messages for the PDB staff
RAPD                         Discussions about Randomly Amplified Polymorphic
                                DNA
SCIENCE-RESOURCES **         Information from/about scientific funding
                                agencies
TROPICAL-BIOLOGY             Discussions about research in tropical biology
VIROLOGY                     Discussions about research in virology
WOMEN-IN-BIOLOGY             Discussions about issues concerning women
                                biologists
YEAST                        Discussions about the molecular biology
                                and genetics of yeast


** Note that newsgroups flagged with ** are moderated, i.e., postings
are directed to a moderator (editor) who later forwards messages
(possibly edited or condensed) to the newsgroup.


BIOSCI Newsgroup Discussion Leaders
-----------------------------------

Most scientific specialty newsgroups (except for a few created several
years ago) have individuals who are responsible for stimulating
discussion on the newsgroup.  General purpose forums such as
METHODS-AND-REAGENTS do not have discussion leaders.  If a group that
you are interested in does not seem to have much activity recently,
please contact the discussion leader and ask why.

NEWSGROUP NAME               Discussion Leader and their e-mail address
--------------               ------------------------------------------
ACEDB-SOFT                   Mike Cherry (cherry@genome.stanford.edu)
AGEING                       Sydney Shall (bafa1@central.sussex.ac.uk)
AGROFORESTRY                 Gerry Lawson (F_GJL@vaxa.nerc-bush.ac.uk)
ARABIDOPSIS                  Chris Somerville (21847CRS@msu.edu)
BIOFORUM                     None
BIOLOGICAL-INFORMATION-
  THEORY-AND-CHOWDER-SOCIETY Tom Schneider (toms@ncifcrf.gov)
BIONAUTS                     Rob Harper (harper@convex.csc.fi)
BIONEWS **                   David Kristofferson (kristoff@net.bio.net)
BIO-JOURNALS **              David Kristofferson (kristoff@net.bio.net)
BIO-MATRIX                   Dan Davison (davison@uh.edu)
BIO-SOFTWARE                 None
BIOTHERMOKINETICS            John Woods (eanv20@castle.edinburgh.ac.uk)
CELL-BIOLOGY                 Ola Myklebost (ola.myklebost@dnr.uio.no)
CHLAMYDOMONAS                Elizabeth H. Harris (chlamy@acpub.duke.edu) and
                             Antonio R. Franco (bf1rodri@cc.uco.es)
CHROMOSOMES                  Bruce Roe (broe@aardvark.ucs.uoknor.edu) and
                             Greg Lennon (greg@mendel.llnl.gov)
COMPUTATIONAL-BIOLOGY **     Phil J. Curtiss (curtiss@umiacs.umd.edu)
DROSOPHILA                   Michael Ashburner (m.ashburner@gen.cam.ac.uk)
EMBL-DATABANK                None (datalib@embl-heidelberg.de)
EMPLOYMENT                   None
GDB                          Kerryn Brandt (kab@welchgate.welch.jhu.edu)
GENBANK-BB                   Dennis Benson (benson@ncbi.nlm.nih.gov)
GENETIC-LINKAGE              Steve Bryant (s_bryant@icrf.ac.uk)
HIV-MOLECULAR-BIOLOGY        Mika Salminen (msalminen@nphi.fi)
HUMAN-GENOME-PROGRAM         Jane Peterson (jp2@cu.nih.gov)
IMMUNOLOGY                   Donald Forsdyke (forsdyke@qucdn.queensu.ca)
INFO-GCG                     John Cargill (ontogen@nic.cerf.net)
JOURNAL-NOTES                Donald Forsdyke (forsdyke@qucdn.queensu.ca)
METHODS-AND-REAGENTS         None
MOLECULAR-EVOLUTION          Dan Davison (davison@uh.edu)
MYCOLOGY                     Tom Adams (tom@bio.tamu.edu)
                             Leland Ellis (leland@straylight.tamu.edu)
                             Greg May (gsmay@bcm.tmc.edu)
NEUROSCIENCE                 Vincent A Mazzarella (vamg6792@uxa.cso.uiuc.edu)
N2-FIXATION                  Eng-Leong Foo
                             (eng-leong_foo_mircen-ki%micforum@mica.mic.ki.se) 
PHOTOSYNTHESIS               Johnathan Marder (marder@agri.huji.ac.il)
PLANT-BIOLOGY                Tony Travis (ajt@rri.sari.ac.uk)
POPULATION-BIOLOGY           None
PROTEIN-ANALYSIS             Amos Bairoch (bairoch@cmu.unige.ch) and
                             John Garavelli (garavelli@nbrf.georgetown.edu)
PROTEIN-CRYSTALLOGRAPHY      Morten Kjeldgaard (morten@oase.kemi.aau.dk)
RAPD                         James Farmer (farmerj@yvax.byu.edu)
SCIENCE-RESOURCES **         David Kristofferson (kristoff@net.bio.net)
TROPICAL-BIOLOGY             Matti Nummelin (saarikko@cc.helsinki.fi)
VIROLOGY                     Robert Coelen (robert@arbo.microbiol.uwa.oz.au)
WOMEN-IN-BIOLOGY             Cassandra Smith (cls@buenga.bu.edu)
YEAST                        Francis Ouellette (francis@ncbi.nlm.nih.gov)

** Note that newsgroups flagged with ** are moderated.


Participating in BIOSCI Using USENET News Software
-------------------------------------------------- 
Users who have access to USENET news software and the bionet USENET
groups can participate immediately, i.e., they do not need to
"subscribe" to anything.  They can read and reply to messages using
their local news software (e.g., "nn" or "rn") and post new messages
of their own.

Users will have to consult their local systems managers for help in
using news software.  There are many different programs available and
the BIOSCI staff can not provide training in news software use.
Fortunately, most news software is fairly simple to use and can be
learned quickly.

When posting new messages, USENET users should be sure to set the
message "distribution" to "world" or "bionet" or else your message may
not be distributed beyond your local computer.  In most cases,
messages are posted directly to the newsgroups without editorial
intervention.  Some groups (indicated in the lists above) are
"moderated," however.  This means that postings to these newsgroups
will be sent to the newsgroup moderator who will decide whether or not
the message is suitable for posting to the newsgroup in question.


Participating in BIOSCI by E-mail
---------------------------------
PLEASE NOTE THAT IF YOU HAVE ACCESS TO USENET NEWS YOU DO NOT NEED AN
E-MAIL SUBSCRIPTION!!  Simply read and post to the newsgroups in the
"bionet" newsgroup hierarchy using your USENET news software.


E-mail Subscription Requests and other Information
--------------------------------------------------
For users in the Americas and Pacific Rim countries, e-mail
subscription and cancellation requests are handled automatically by an
e-mail server, although personal assistance is also available via the
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You should first send the

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Please BE SURE to substitute the appropriate mailing list name
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After obtaining the names of the mailing lists using the "lists"
command, use the

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or 

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Your e-mail address is obtained AUTOMATICALLY from the header of your
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Multiple commands may be placed on separate lines in the same mail
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Other command details are included in the mail server help file from
biosci-server@net.bio.net.  To get the server help file
(in computerese 8-), send in the

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E-mail Address Changes
----------------------
If you have subscribed to a newsgroup and are now leaving an
institution or changing your e-mail address, it is IMPERATIVE that you
cancel your subscription!  Non-existent addresses or overflowing
mailboxes cause computer mail programs to send back "daemon" messages
which might bother everybody on the newsgroup.  We will immediately
remove any address causing such a problem, but would prefer it if you
would notify us in advance as a courtesy to the rest of the user
community.


Interruption of E-mail Service
------------------------------
It is our policy to remove any address from our mailing lists which
becomes inaccessible and causes mail to bounce back to the sender.
This might happen to you if your local computer or network fails for a
significant period of time.  If you notice that you are no longer
receiving BIOSCI postings, it may be because your address was removed
for the above reason.  It will be necessary for you to contact
biosci-help@net.bio.net and resubscribe.  Please see the BIOSCI FAQ,
mentioned at the beginning of this document, for more details on how
BIOSCI handles addresses which reject mail.


Posting Messages to Newsgroups by E-mail
----------------------------------------
Those who use e-mail to post messages should send their mail to the
following Internet addresses in the USA:

**********************************************************************
DO NOT, REPEAT, DO NOT POST SUBSCRIPTION OR CANCELLATION REQUESTS
DIRECTLY TO ANY OF THE NEWSGROUP E-MAIL POSTING ADDRESSES.  PLEASE USE
ONLY THE ADDRESS

                      biosci-server@net.bio.net

for subscription or cancellation requests as explained above.  Your
posting could go to several thousand people.  Supposing that each
person spends a couple of seconds to figure out that you did this,
before they go on to the next message.  You will have wasted the
equivalent of several hours of one person's time, not to mention
wasted computer time and disk storage.
**********************************************************************

MAILING LIST NAME           Mailing Address 
-----------------           ----------------      
ACEDB-SOFT                  acedb@net.bio.net
AGEING                      ageing@net.bio.net
AGROFORESTRY                ag-forst@net.bio.net
ARABIDOPSIS                 arab-gen@net.bio.net
BIOFORUM                    bioforum@net.bio.net
BIO-INFORMATION-THEORY +    bio-info@net.bio.net
BIONAUTS                    bio-naut@net.bio.net
BIONEWS **                  bionews@net.bio.net 
BIO-JOURNALS **             bio-jrnl@net.bio.net
BIO-MATRIX                  biomatrx@net.bio.net
BIO-SOFTWARE                bio-soft@net.bio.net
BIOTHERMOKINETICS           btk-mca@net.bio.net
CELL-BIOLOGY                cellbiol@net.bio.net
CHLAMYDOMONAS               chlamy@net.bio.net
CHROMOSOMES                 biochrom@net.bio.net
COMPUTATIONAL-BIOLOGY **    comp-bio@net.bio.net
DROSOPHILA                  dros@net.bio.net
EMBL-DATABANK               embl-db@net.bio.net 
EMPLOYMENT                  biojobs@net.bio.net 
GDB                         gdb@net.bio.net
GENBANK-BB                  genbankb@net.bio.net
GENETIC-LINKAGE             gen-link@net.bio.net
HIV-MOLECULAR-BIOLOGY       hiv-biol@net.bio.net
HUMAN-GENOME-PROGRAM        gnome-pr@net.bio.net
IMMUNOLOGY                  immuno@net.bio.net
INFO-GCG                    info-gcg@net.bio.net
JOURNAL-NOTES               jrnlnote@net.bio.net
METHODS-AND-REAGENTS        methods@net.bio.net 
MOLECULAR-EVOLUTION         mol-evol@net.bio.net
MYCOLOGY                    mycology@net.bio.net
NEUROSCIENCE                neur-sci@net.bio.net
N2-FIXATION                 n2fix@net.bio.net
PHOTOSYNTHESIS              photosyn@net.bio.net
PLANT-BIOLOGY               plantbio@net.bio.net
POPULATION-BIOLOGY          pop-bio@net.bio.net 
PROTEIN-ANALYSIS            proteins@net.bio.net
PROTEIN-CRYSTALLOGRAPHY     xtal-log@net.bio.net
RAPD                        rapd@net.bio.net
SCIENCE-RESOURCES **        sci-res@net.bio.net
TROPICAL-BIOLOGY            trop-bio@net.bio.net
VIROLOGY                    virology@net.bio.net
WOMEN-IN-BIOLOGY            womenbio@net.bio.net
YEAST                       yeast@net.bio.net

+ full name is BIOLOGICAL-INFORMATION-THEORY-AND-CHOWDER-SOCIETY

** Note that newsgroups flagged with ** are moderated, i.e., postings
are directed to a moderator (editor) who later forwards messages
(possibly edited or condensed) to the newsgroup.



Retrieval of old postings from the BIOSCI archives
--------------------------------------------------
Users with Internet access can use either the WAIS or gopher software
to search the BIOSCI archives located at net.bio.net as described in
the BIOSCI FAQ.  E-mail users can retrieve messages from our waismail
e-mail server.  For waismail instructions, send the word

help

in a message to waismail@net.bio.net.  Please leave the Subject: line
of your message blank.


BIOSCI "prototype" newsgroups
-----------------------------
To assist areas of research in developing their own electronic
communication forums, BIOSCI at net.bio.net will set up, on request, a
mailing list *without* an associated USENET newsgroup.  The mailing
list is created only at net.bio.net, the U.S. BIOSCI node, and all
subscription requests must be sent to the e-mail server at
biosci-server@net.bio.net regardless of one's geographical location.
There is no charge for this or any other BIOSCI service, as usual.

This procedure waives the rule that requires each new newsgroup
proposal to be put to a vote of the readership first (see the BIOSCI
FAQ, mentioned at the beginning of this document, for details on
creating new full-fledged newsgroups and prototype newsgroups).  Each
mailing list ("prototype newsgroup") must have a scientist volunteer
to serve as its discussion leader and an initial list of e-mail
subscribers.  The prototype newsgroup has six months to build up its
readership after which time it is put out for a vote for full
newsgroup status (i.e., to have both a mailing list *and* parallel
USENET newsgroup created at both BIOSCI nodes in the U.S. and U.K.).
If you are interested in establishing such a forum for your research
specialty, please contact biosci-help@net.bio.net.

The current prototype newsgroups are listed below.  Please send
subscription requests to biosci-server@net.bio.net and NOT to the
newsgroup posting addresses.  Prototype newsgroups may *not* be fully
archived, so please be sure to save any messages that you may want to
refer to again.

Posting Address         Purpose
---------------         -------
biogopher@net.bio.net	A communication forum for all Bio-Gopher
                          administrators.
emf-bio@net.bio.net     Discussions on the electromagnetic field
                          interactions with biological systems.
pep-libs@net.bio.net    Discussion on generation and use of peptide
                          molecular repertoires displayed on phage or
                          prepared as synthetic peptide combinatorial
                          libraries.  
rna@net.bio.net         Discussions about RNA editing, RNA splicing,
                          and ribozyme activities of RNA.
staden-users@net.bio.net Discussions about the Staden Package for
                          molecular sequence analysis.
urodeles@net.bio.net    Discussions among research scientists
                          using urodele amphibians (axolotls,
                          salamanders, and newts) in any biological
                          field.
yac@net.bio.net         Dicussions about yeast artificial chromosomes


FURTHER QUESTIONS???  Please address them to biosci-help@net.bio.net.

PLEASE DO NOT DIRECT BIOSCI QUESTIONS TO THE PERSONAL E-MAIL ADDRESSES
OF PEOPLE ON THE BIOSCI STAFF!!  DUE TO OUR VOLUME OF MAIL, ANSWERS MAY
BE DELAYED OR NOT SENT AT ALL!!


From BIOSCI-REQUEST@net.bio.net  Thu Jan 13 09:51:25 1994
Received: by net.bio.net (5.65/IG-2.0) 
	id AA09399; Thu, 13 Jan 94 09:51:29 -0800
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	id AA09395; Thu, 13 Jan 94 09:51:25 -0800
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	id AA04128; Thu, 13 Jan 1994 10:51:20 -0700
Message-Id: <9401131751.AA04128@selway.umt.edu>
Subject: transcription
To: rna
Date: Thu, 13 Jan 1994 10:51:19 -0700 (MST)
From: "Douglas J Bucklin" <bucklin@selway.umt.edu>
X-Mailer: ELM [version 2.4 PL23]
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
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Content-Length: 507       

RNA Scientists:

A line of discussion appeared a while ago on high yield transcription.  The
talk centered on synthesis of lengthy transcripts.  My question is how one
would go about producing a monstrous quantity of short transcripts-less then
15 bases?

The literature seems to say that T7 will not do the job.  Will any of the other
polymerases do the trick?  We could go to chemical synthesis, but that doesn't
seem to be that reliable at this point.

Any suggestions?

D. Bucklin
U. of MT
Missoula MT


From BIOSCI-REQUEST@net.bio.net  Thu Jan 13 11:06:14 1994
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	id AA13486; Thu, 13 Jan 94 11:06:17 -0800
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	id AA13482; Thu, 13 Jan 94 11:06:14 -0800
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	id AA01076; Thu, 13 Jan 94 11:07:55 PST
Date: Thu, 13 Jan 94 11:07:55 PST
From: brianw@cal (Brian Wimberly)
Message-Id: <9401131907.AA01076@cal.scripps.edu>
To: rna
Subject: Re: transcription
X-Sun-Charset: US-ASCII
Content-Length: 674


I wonder what you mean by "monstrous quantities". As an NMR spectroscopist
my point of view is somewhat skewed!

The Tinoco lab (UC Berkeley) has produced NMR quantities (10+ mg) of very
short RNAs -- as short as 10 nt -- using T7 RNA polymerase. Yields
are VERY sequence-dependent are are difficult to predict. We do know that
there is a very strong preference for G at the 5' end, and yields tend
to be better for transcripts with purine-rich 5'ends. Too many G's in a row
can however cause slipping during transcription.

If you want to do this you should prepare the T7 polymerase yourself; see
Wyatt et al., Biotechniques 11, 764 & references therein.

Brian Wimberly

From BIOSCI-REQUEST@net.bio.net  Fri Jan 14 08:30:32 1994
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	id AA02613; Fri, 14 Jan 94 08:30:36 -0800
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	id AA02609; Fri, 14 Jan 94 08:30:32 -0800
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	id AA21268; Fri, 14 Jan 94 11:30:30 -0500 (from bl275 for rna@net.bio.net)
Message-Id: <9401141630.AA21268@piglet.INS.CWRU.Edu>
Date: Fri, 14 Jan 94 11:30:30 -0500
From: bl275@cleveland.Freenet.Edu (Dan Diaz)
To: rna
Subject: oligomers of ribothymidine (5-methyluridine) for enzyme studies
Cc: bl275@cleveland.freenet.edu
Reply-To: bl275@cleveland.Freenet.Edu (Dan Diaz)



i am studying a single-strand specific dna exonuclease from e. coli.  we
are trying to set up a series of experiments to ascertain whether the
enzyme discriminates between rna and dna molecules solely on the basis of
the presence or absence of a 2' hydroxyl.

due to their lack of secondary structure, oligomers of thymidine are the most
extensively hydrolyzed substrates.  we are now in search of oligomers of
'ribothymidine' (5-methyluridine) for comparison to oligothymidine.

there is no evidence that the enzyme hydrolyzes any known rna molecule,
including poly(A) and other common rna homo-oligomers.  we are in search of
a source of poly- or oligo-5-methyluridine for direct comparison to the
enzyme's favored poly(T) substrate.

i have found no commercial source for a 5-methyluridine phosphoramidite, or
for a di- or triphosphate for use in an enzymatic synthesis of polymers.

i realize that comparing the substrate potential of poly(T) and poly(rT)
will not unambiguously answer the question of substrate discrimination, as
other factors in substrate binding may be obscured when using
homooligomers, but i think it an important first step.

have i missed a potential source?  any suggestions?  thanks!

From BIOSCI-REQUEST@net.bio.net  Fri Jan 14 09:13:07 1994
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	id AA04444; Fri, 14 Jan 94 09:13:07 -0800
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	id AA01235; Fri, 14 Jan 94 09:14:48 PST
Date: Fri, 14 Jan 94 09:14:48 PST
From: brianw@cal (Brian Wimberly)
Message-Id: <9401141714.AA01235@cal.scripps.edu>
To: rna
Subject: Re: oligomers of ribothymidine (5-methyluridine) for enzyme studies
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If Nassim Usman can't tell you where to find the stuff, then no one can ...
Usman works at RPI in Boulder, Colorado (unfortunately I don't have the phone
number).

Brian

From BIOSCI-REQUEST@net.bio.net  Fri Jan 14 10:48:58 1994
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Date: Fri, 14 Jan 94 13:48:54 -0500
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From: simpson@biovx2.DNET.NASA.GOV
To: "rna@net.bio.net"@EAST.DNET.NASA.GOV

Dear RNA neters, especially RNA editors:

I would like to raise a few issues about editing to get some feedback. One 
involves a  semantic problem. The term 'editing' is now employed for several 
probably very different systems and this leads to confusion, especially for 
people not in the field. Brenda Bass has coined the terms "substitution 
editing" to describe the plant mitochondria, apoB type, and "insertion/
deletion editing" to describe the trypanosomatid mitochondrion type. 
One could argue that in the absence of evidence on the mechanism of the 
plant type, there could very well be a distant relationship to the 
trypanosome type, but I doubt it. And then of course the tRNA people also 
would like to use the term editing for nt modifications in tRNAs. 
What are your thoughts to clear up this semantic problem?

The second item I would like to bring up is the fascinating  
phenomenon of "transkinetoplastidy" from the Lee and Chang labs. This appears 
to involve major changes in the minicircle DNA population in one to two 
generations as a result of various stresses (drug selection). How can this tie 
in with the known gRNA coding capacity of minicircles? They explain the 
changes as an amplification of preexisting minor sequence classes. But during 
the process, there is a striking change in morphology of the kinetoplast DNA 
network. Could this represent the major mechanism for changing minicircle and 
thereby gRNA sequences, a phenomenon which has been frequently observed with 
many kinetoplastid species in prolonged culture? 
It would be nice to get some thoughts from others in the field. 

Larry Simpson
UCLA


From BIOSCI-REQUEST@net.bio.net  Fri Jan 14 15:04:10 1994
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From: Dahlberg@macc.wisc.edu
Subject: Nassim Usman
To: RNA

Nassim Usman's phone number is (303) 449-6500


From BIOSCI-REQUEST@net.bio.net  Fri Jan 14 17:49:39 1994
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From: dave@scripps.edu (Dave Stout)
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To: biosci
Subject: RNA newsgroup
Cc: rna


 Please include me in the RNA newgroup 

 Dave Stout
 1-14-94
 dave@scripps.edu

From BIOSCI-REQUEST@net.bio.net  Tue Jan 18 03:02:06 1994
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Date: Mon, 17 Jan 1994 16:31:38 -0600 (MDT)
From: BASS@MSSCC.MED.UTAH.EDU
Subject: editing nomenclature
To: rna
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Well I agree with Larry Simpson that it is sometimes confusing sorting out 
just what exactly constitutes an RNA editing event. In light of past 
literature I think both insertion/deletion events and substitution events 
must be called editing.  However, despite the fact that future studies may 
show mechanistic similarities, I think these two different types of editing 
should be distinguished.  I am open to suggestions of other nomenclature to 
distinguish these two catagories (besides substitution and insertion/
deletion).  What needs particular attention, as Larry points out, is how to 
insure that tRNA modifications are distinguished from "substitution" 
editing.  When I originally defined "substitution" editing, I noted that,
tRNA modifications always yield non-Watson-Crick bases, while substitution 
editing involves the conversion of one Watson-Crick base to another.  
However, unless one considers inosine a WC base, the new data from Peter 
Seeburg's lab (Dec 31 Cell) puts this qualification on shaky grounds. 
Of course production of inosine from adenosine is still a minor modification 
compared to most of the things that happen on tRNA.
So far, substitution editing events appear to occur by deamination or 
amination of a WC base.  Perhaps this could help in the distinction?
On a related note, the editing event described by Seeburg is almost 
certainly performed by the enzyme formally called dsRNA unwinding/modifying 
activity, unwindase etc etc.  We are now calling this enzyme dsRAD 
(pronounced dee-ess-RAD) for dsRNA adenosine deaminase.
-Brenda Bass

From BIOSCI-REQUEST@net.bio.net  Tue Jan 18 08:31:30 1994
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Date: Tue, 18 Jan 1994 17:20:21 +0100 (MET)
From: SLOOF@amc.uva.nl
Subject: RNA editing semantics
To: RNA
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When I first used the term RNA editing I meant to indicate that the genetic
content (function) of an mRNA can be changed by posttranscriptional alteration
of its nt sequence. This can be extrapolated to other RNAs (t-, r-, g-, etc)
and introns, in which case editing processes  may alter important structural andfunctional motifs. (N.B.: some editing events do not alter function, cf third
codon position, leader, trailer editing, etc.).Technically speaking, many of
the longer known RNA modification processes also alter the funtioning of the
corresponding RNAs, so unless we want to call everything 'RNA editing' we
should reserve this term to processes that only generate Watson/Crick bases.
The price we would have to pay is that the processes that generate Is in the
GluR receptor should be called RNA modification and not RNA editing processes.
As long as the mechanism of the various editing processes are not known, the
terms insertional and substitutional editing seem the best way to describe
what may be going on, as long as it is stated with which type(s) of nucleotide
one is dealing:e.g. U-insertion, pyrimidine interconversion, etc. We should not use terms like tRNA editing without defining the type of editing we are talking
about.I also do not think we should encourage the use of the terms 'Type I, II'
editing, in analogy to splicing, without more precise knowledge of the various
mechanisms to help define the different editing 'Types'.
Rob Benne

From BIOSCI-REQUEST@net.bio.net  Thu Jan 20 22:46:06 1994
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To: rna
Subject: RNA in cacodylate buffer

Hi RNA folks,

I am working with a 21mer RNA hairpin whose structure seems to be very dependent on the presence of magnesium. 
I did several melting profiles in buffers that contained 10mM phoshpate and up to 100mM Mg until I got some precipitate; Mg and phosphate not a great idea,I had expected that. But I was surprised that 50mM Mg and 10mM phosphate do not form a precipitate.
So I changed the buffer component to 10mM sodium cacodylate (pH7) and then to my great unpleaure, a precipitate formed with 5, 25, and 50mM Mg. 
There is no precipitate when no RNA is present ( about 1uM).

Does somebody know something about weird behaviour of cacodylate buffers when Mg is present or about RNA precipitation? 
Is there literature about that topic? 

I would appreciate any comments (despite my vague description).


Thanks, Uli



Uli Schmitz
UC,San Francisco
Dept. Pharm. Chem
schmitz@picasso.ucsf.edu


From BIOSCI-REQUEST@net.bio.net  Thu Jan 27 15:54:57 1994
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Subject: pKK3535 sequence
To: rna
Date: Thu, 27 Jan 1994 16:54:55 -0700 (MST)
From: "Michael van Waes" <bi__mvw@selway.umt.edu>
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Hi netters!  I nedd the complete sequence of pKK3535; not just the rrnB, but
	also the flanking sequences. Does anybody know if I can find this 
	anywhere? I unsuccessfully searched rdp and genbank.

	Thanks for your help



		Michael van Waes	|
		Div. of Biol. Sci.	| Please remain calm, 
		Univ. of Montana	| it's no use both of us being
		Phone: 406-243-5733  	| hysterical at the same time.
		bi__mvw@selway.umt.edu	|

From BIOSCI-REQUEST@net.bio.net  Thu Jan 27 17:02:16 1994
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From: francis@borduas.nlm.nih.gov (Francis Ouellette)
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To: rna, bi__mvw@selway.umt.edu
Subject: NOT pKK3535 sequence
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Content-Length: 1220

Michael van Waes (bi__mvw@selway.umt.edu) asks:

> Hi netters!  I need the complete sequence of pKK3535; not just the rrnB, but
> also the flanking sequences. Does anybody know if I can find this 
> anywhere? I unsuccessfully searched rdp and genbank.

Michael,

is this a CLONTECH vector?  I check GenBank, and it is indeed not 
here, but we have pKK388-1 from Clontech, maybe you can get in touch with 
them for the one one of interest.

From the GenBank file for pKK388-1 (Accession Number U02444):

>  This vector can be obtained from CLONTECH Laboratories, Inc., 4030
>  Fabian Way, Palo Alto, CA 94303, USA. To place an order call (415)
>  424-8222 or (800) 662-2566, extension 1. International customers,
>  please contact your local distributor.  For technical information,
>  call (415) 424- 8222 or (800) 662-2566, extension 3.
>  This sequence was compiled by Jurgen Brosius; this vector has not
>  been completely sequenced. If you suspect there is an error in this
>  sequence, please contact CLONTECH's Technical Service Department at
>  (415) 424-8222 or (800) 662-2566, extension 3 or E-mail
>  CLONTECH@BIOTECHNET.COM.


regards, 

francis

--
| B.F. Francis Ouellette  
|
| francis@ncbi.nlm.nih.gov   

From BIOSCI-REQUEST@net.bio.net  Fri Jan 28 09:51:40 1994
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To: rna
Subject: help


From BIOSCI-REQUEST@net.bio.net  Sun Jan 30 13:14:14 1994
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From: birney@molbiol.ox.ac.uk
To: rna
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Hi

	If anyone out there works on either the chloroplasts RNA binding
proteins OR the hnrnpA1 like proteins, it would be a great help to get in
touch with you to try and sort out which sequence is what, some kind of
nomenculture and good references. I'm trying to run a database system 
on the RRM (RBD) domain (if you saw my last posting then you'll
understand) and both these sets of proteins are giving me a headache (!).

	If anyone knows the email address of someone who might help that 
would be equally useful...

thanks alot

ewan

birney@molbiol.ox.ac.uk

From BIOSCI-REQUEST@net.bio.net  Wed Feb  2 17:37:09 1994
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Date: Wed, 2 Feb 1994 17:55:46 +0100
To: rna
From: opperd@trop.ucl.ac.be
Subject: thoughts on transkinetoplastidy
Cc: simpson@uclabio.bitnet

Dear RNA neters,

Larry Simpson wrote in a previous message

>The second item I would like to bring up is the fascinating  
>phenomenon of "transkinetoplastidy" from the Lee and Chang labs. This appears 
>to involve major changes in the minicircle DNA population in one to two 
>generations as a result of various stresses (drug selection). How can this tie 
>in with the known gRNA coding capacity of minicircles? They explain the 
>changes as an amplification of preexisting minor sequence classes. But during 
>the process, there is a striking change in morphology of the kinetoplast DNA 
>network. Could this represent the major mechanism for changing minicircle and 
>thereby gRNA sequences, a phenomenon which has been frequently observed with 
>many kinetoplastid species in prolonged culture? 
>It would be nice to get some thoughts from others in the field. 
>

I'll try to put forward an explanation for the observed
transkinetoplastidy. 
The phenomenon of transkinetoplastidy in Leishmania as reported by the Lee
and Chang laboratories reminds me of what we have seen earlier to happen in
the trypanosome field. African trypanosomes that have been passaged for a
long time through animals tend to lose the capability of establishing an
infection in the fly. What actually happens is that, because of the absence
of any need to switch on  mitochondrial activity, deletions and mutations
accumulate in the kinetoplast DNA up to a situation where maxicircles and 
minicircles are progressively being lost in an irreverible manner. An
intermediate stage is the one encountered in certain T. evansi and T.
equiperdum strains that have lost maxicircles as well as minicircle
complexity and are left with only one class of minicircles. These naturally
occurring strains have lost infectivity for the insect vector and are
comparable with the mitochondrial rho minus mutations in yeast. Finally
dyskinetoplastic strains can be obtained, comparable to the petite
mutations of yeast, lacking any detectable kDNA. It is obvious that such
strains that do not express any mitochondrially encoded activity have no
need for RNA editing and for guide RNAs.
We now know that certain Phytomonas species are also able to  suppress
mitochondrial activity completely. Thus this is a property that is probably
shared with many more, if not all, trypanosomatidae. If true, it may be
that certain Leishmania species, adapted to carbohydrate-rich media, are
also capable of suppressing, either partially or completely, mitochondrial
activity. I think that the partial loss of guide RNAs in L. tarentolae kDNA
is suggestive in this respect. If  under drug pressure mitochondrial
activity is completely suppressed and mutations accumulate in the kDNA,
this may lead to a rapid and drastic alteration of the maxicircle
population through selection, refered to as  transkinetoplastidy. When drug
pressure is releaved a minority, with unchanged genotype overgrows and
changes the overall population back to normal.

I would like to hear any comments
------
Fred R. Opperdoes                         Tel: xx32-2-7647539
Research Unit for Tropical Diseases       Fax: xx32-2-7626853
International Institute of Cellular       E-mail: Opperdoes@trop.ucl.ac.be
and Molecular Pathology
Avenue Hippocrate 74-75
B-1200 Brussels, Belgium


From BIOSCI-REQUEST  Thu Feb 10 04:48:25 1994
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Date: Wed, 09 Feb 94 19:13 CDT
From: Rock Pulak <RAPULAK@macc.wisc.edu>
Subject: RNA Processing Meeting
To: RNA
X-VMS-To: IN%"rna@net.bio.net",RAPULAK

 
RNA Processing Meeting of The RNA Society
University of Wisconsin, Madison
May 24 to 29, 1994
 
 
The Symposium: The 14th annual RNA PROCESSING MEETING will be
held in 1994 at the University of Wisconsin, Madison.  It will be
one day longer than previously, beginning Tuesday evening,
May 24, and concluding with lunch Sunday, May 29. The venue has
been selected to permit a larger attendance than usual.  We plan
to have 8 or 9 sessions of oral presentations and 3 or 4 poster
sessions.  We may also have informal workshops, if the need
arises.  Session chairpersons will include: Sue Berget, Gideon
Dreyfuss, Witold Filipowicz, Michael Green, Alain Jacquier,
Angela Kramer, and Elsebet Lund.
 
DEADLINE FOR FORMS, FEES AND ABSTRACTS:  February 22, 1994
 
For more information or forms, contact:
 
               Wisconsin Union Conference Services
               Telephone:608-262-2755
               Fax: 608-262-5487
 
Topics to be covered in the oral sessions include:
 
Evolution of RNA         Modification/editing     RNA Structure
mRNA stability           3(prime) end processing  Ribozymes
Splicing mechanisms      Alternative splicing     RNA Transport
rRNA processing          RNP biogenesis      tRNA processing
RNP structure and function         RNA-protein interactions
Roles of RNA in translation
Cell biology and ultrastructural aspects of RNA
 
 
Organized by:  Jean Beggs, University of Edinburgh,
               Edinburgh. U.K.
               Marlene Belfort, New York State Dept. of Health,
               Albany, U.S.
               Joan Steitz, Yale University Medical School,
               New Haven, U.S.
               Marvin Wickens, University of Wisconsin,
               Madison, U.S.
 
 
---------------------------------------------------------------
 
Rock Pulak
rapulak@macc.wisc.edu
UW-Madison

From BIOSCI-REQUEST  Fri Feb 11 03:28:24 1994
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Date: Thu, 10 Feb 94 19:50:21 -0700
From: davis@adenosine.pharm.utah.edu (Darrell R. Davis)
Posted-Date: Thu, 10 Feb 94 19:50:21 -0700
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To: RNA
In-Reply-To: Rock Pulak's message of Wed, 09 Feb 94 19:13 CDT <24020919133848@vms2.macc.wisc.edu>
Subject: Cuvette Adapters




Does anyone know where to buy cuvette adapters for using 1mm path
cuvettes in holders designed for 1 cm cuvettes.  In Methods in Enz
(180) "RNA Processing", Tinoco mentions that when doing Tm's with
small cuvettes, aluminum adapters are used to insure good heat
conduction.  I can verify that putting a short pathlength cuvette into
a 1 cm holder can produce less than optimal results.


--------------------------------------------------------------
 
 Darrell R. Davis 
 Medicinal Chemistry 
 University of Utah 
  
--------------------------------------------------------------


From BIOSCI-REQUEST  Mon Feb 14 21:41:48 1994
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From: Liam E Good <lgood@uoguelph.ca>
Subject: Returned mail: User unknown (fwd)
To: rna
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Hi,

We are looking at RNA processing and would like to block our molecule at
the 3' end with some sort of addition or modification that would
prevent exonuclease digestion.  Does anyone know if this
can be done and how we might go about it.

Liam

lgood@uoguelph.ca





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From: dcs@proton.chem.yale.edu (Dave Schweisguth)
Message-Id: <9402191454.AA22443@proton.chem.yale.edu>
Subject: Hi all
To: rna (RNA mailing list)
Date: Sat, 19 Feb 1994 09:54:15 -0500 (EST)
Organization: Dept. of Chemistry, Yale University
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Hi all,

I've just signed up and thought I'd introduce myself. I'm in Peter Moore's
group at Yale. I (and most of the lab) do small RNA structures by NMR;
presently I'm concerned with tRNAfMet and tRNAmMet anticodon arm fragments.
I like to think I have a computational bent but am presently not exercising
it, being in the midst of standard RNA NMR structure solution.

I see from the archives that traffic has been light.  I've just learned about
this list (having been sucked into the BIOSCI hegemony by way of the nascent
NMR structure list); I'll pass the address around and perhaps we'll have a
few more Yale "Hi all"s shortly.

Cheers,

-- 
| Dave Schweisguth   Internet: dcs@neutron.chem.yale.edu   MIME spoken here |
| Yale Depts. of MB&B & Chemistry   Phone: 203-432-5208   Fax: 203-432-6144 |
| For complying with the NJ Right To Know Act:  Contents partially unknown. |


From BIOSCI-REQUEST  Mon Feb 21 19:48:43 1994
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	id AA08469; Mon, 21 Feb 94 14:49:04 -0500 (from bl275 for rna@net.bio.net)
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Date: Mon, 21 Feb 94 14:49:04 -0500
From: bl275@cleveland.freenet.edu (Dan Diaz)
To: rna
Subject: Runoff transcripts
Reply-To: bl275@cleveland.freenet.edu (Dan Diaz)



I would like to make a few hundred micrograms of tritiated RNA
via runoff transcription.

Any email pointing me to relevant references for protocols
would be appreciated.

Thanks

