From owner-rapd@net.bio.net Sun Jun 06 23:00:00 1993
Path: biosci!edvz.uni-graz.ada.at!VANSTAAD
From: VANSTAAD@edvz.uni-graz.ada.at ("Moira J. van Staaden")
Newsgroups: bionet.molbio.rapd
Subject: Operon address
Message-ID: <156*.S=VANSTAAD.O=edvz.PRMD=uni-graz.ADMD=ada.C=at.@MHS>
Date: 7 Jun 93 21:57:24 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 4

I'd appreciate if someone could tell me the address, fax etc for Operon
Technologies, Ca. 
Thanks,
MvS

From owner-rapd@net.bio.net Sun Jun 06 23:00:00 1993
Path: biosci!uwm.edu!spool.mu.edu!howland.reston.ans.net!ux1.cso.uiuc.edu!sdd.hp.com!news.cs.indiana.edu!nstn.ns.ca!dragon.acadiau.ca!ace.acadiau.ca!msnyder
From: msnyder@ace.acadiau.ca (MARLENE SNYDER)
Newsgroups: bionet.molbio.rapd
Subject: Question: Use of Ultra-pure agarose necessary.....?
Message-ID: <msnyder.3.739470101@ace.acadiau.ca>
Date: 7 Jun 93 17:21:39 GMT
Sender: news@dragon.acadiau.ca
Organization: Acadia University
Lines: 8
Nntp-Posting-Host: 131.162.69.36


I am curious: We are about to start attempting some RAPD techniques here. 
However, all we are intersted in is the banding patterns on the agarose (and 
NOT interested in purification of bands after separation). Thus, is it 
necessary to use Ultra pure (and extra expensive) Agarose? Or can we get 
away with using standard lab grade agarose?

Thanks!

From owner-rapd@net.bio.net Mon Jun 07 23:00:00 1993
Path: biosci!daresbury!daresbury!news
From: UDBR150@OAK.CC.KCL.AC.UK
Newsgroups: bionet.molbio.rapd
Subject: Use of ultra pure Agarose
Message-ID: <1993Jun8.115632.27397@gserv1.dl.ac.uk>
Date: 8 Jun 93 11:12:00 GMT
Sender: list-admin@daresbury.ac.uk
Distribution: bionet
Lines: 7
Original-To: RAPD@UK.AC.DARESBURY


 In reply to M.Snyders question about the use of ultra pure Agarose for the
sepparation of RAPD bands.......We have always used standard grade agarose for
the visualisation of the amplification products, although a higher grade is
better for the purification of bands after separation.
 hope this of use to you
 David 

From owner-rapd@net.bio.net Tue Jun 08 23:00:00 1993
Path: biosci!daresbury!doc.ic.ac.uk!uknet!pipex!uunet!psgrain!ee.und.ac.za!ford.ee.up.ac.za!hippo.ru.ac.za!mirk
From: mirk@hippo.ru.ac.za (Prof R Kirby)
Newsgroups: bionet.molbio.rapd
Subject: Re: Question: Use of Ultra-pure agarose necessary.....?
Message-ID: <1993Jun9.083051.18641@hippo.ru.ac.za>
Date: 9 Jun 93 08:30:51 GMT
References: <msnyder.3.739470101@ace.acadiau.ca>
Organization: Rhodes University, Grahamstown, South Africa
Lines: 18

In <msnyder.3.739470101@ace.acadiau.ca> msnyder@ace.acadiau.ca (MARLENE SNYDER) writes:


>I am curious: We are about to start attempting some RAPD techniques here. 
>However, all we are intersted in is the banding patterns on the agarose (and 
>NOT interested in purification of bands after separation). Thus, is it 
>necessary to use Ultra pure (and extra expensive) Agarose? Or can we get 
>away with using standard lab grade agarose?

Try using acrylamide and silver staining, it provides a greater amount
of information per PCR and is just as good as agarose.

Professor Ralph Kirby
Rhodes University
Grahamstown
-- 
   Prof Ralph Kirby - Department of Microbiology - Rhodes University 
   Internet: mirk@hippo.ru.ac.za  Telephone: (0461) 22023 xt 441

From owner-rapd@net.bio.net Tue Jun 08 23:00:00 1993
Path: biosci!enterpoop.mit.edu!gatech!concert!news-feed-1.peachnet.edu!emory!swrinde!elroy.jpl.nasa.gov!usc!wupost!uunet!psgrain!ee.und.ac.za!ford.ee.up.ac.za!hippo.ru.ac.za!mirk
From: mirk@hippo.ru.ac.za (Prof R Kirby)
Newsgroups: bionet.molbio.rapd
Subject: Re: Question: Use of Ultra-pure agarose necessary.....?
Message-ID: <1993Jun9.083051.18641@hippo.ru.ac.za>
Date: 9 Jun 93 08:30:51 GMT
References: <msnyder.3.739470101@ace.acadiau.ca>
Organization: Rhodes University, Grahamstown, South Africa
Lines: 18

In <msnyder.3.739470101@ace.acadiau.ca> msnyder@ace.acadiau.ca (MARLENE SNYDER) writes:


>I am curious: We are about to start attempting some RAPD techniques here. 
>However, all we are intersted in is the banding patterns on the agarose (and 
>NOT interested in purification of bands after separation). Thus, is it 
>necessary to use Ultra pure (and extra expensive) Agarose? Or can we get 
>away with using standard lab grade agarose?

Try using acrylamide and silver staining, it provides a greater amount
of information per PCR and is just as good as agarose.

Professor Ralph Kirby
Rhodes University
Grahamstown
-- 
   Prof Ralph Kirby - Department of Microbiology - Rhodes University 
   Internet: mirk@hippo.ru.ac.za  Telephone: (0461) 22023 xt 441

From owner-rapd@net.bio.net Tue Jun 08 23:00:00 1993
Path: biosci!daresbury!doc.ic.ac.uk!agate!usenet.ins.cwru.edu!gatech!rutgers!utcsri!newsflash.concordia.ca!mizar.cc.umanitoba.ca!etaylor
From: etaylor@ccu.umanitoba.ca (Euan R. Taylor)
Newsgroups: bionet.molbio.rapd
Subject: fusion proteins- query repost
Message-ID: <C8Cwr4.KC7@ccu.umanitoba.ca>
Date: 9 Jun 93 13:42:40 GMT
Sender: news@ccu.umanitoba.ca
Organization: University of Manitoba, Winnipeg, Canada
Lines: 15
Nntp-Posting-Host: ccu.umanitoba.ca

All advice welcome.
cheers
Euan

Usual disclaimers. These are my own opinions and probably nobody else's.
etaylor@ccu.umanitoba.ca
"All great truths begin life as blasphemies"  George Bernard Shaw 




-- 
Usual disclaimers. These are my own opinions and probably nobody else's.
etaylor@ccu.umanitoba.ca
"All great truths begin life as blasphemies"  George Bernard Shaw 

From owner-rapd@net.bio.net Wed Jun 09 23:00:00 1993
Path: biosci!ento.csiro.au!thomasb
From: thomasb@ento.csiro.au
Newsgroups: bionet.molbio.rapd
Subject: southerns
Message-ID: <9306100245.AA01626@spider.ento.csiro.au>
Date: 10 Jun 93 17:45:29 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 16


Has anyone ever tried the usual Southern transfer protocols with acrylamide
gels (ca. 7%), or is electroblotting the go?

If its electroblotting, can I get a protocol?

Thanks.
----------------------------------------------------------------------------
Thomas M. Boyce  	       	       	       	       	      
thomasb@ento.csiro.au
Molecular Biology and Genetics  	       	       	       	Ph: 61-6-246-4159
Division of Entomology, CSIRO   	       	       	       	FAX: 61-6-246-4173
GPO Box 1700
Canberra, ACT 2601
AUSTRALIA


From owner-rapd@net.bio.net Thu Jun 10 23:00:00 1993
Path: biosci!MBCRR.HARVARD.EDU!swiss
From: swiss@MBCRR.HARVARD.EDU (Karen Swisshelm)
Newsgroups: bionet.molbio.rapd
Subject: RE: Question: Use of Ultra-pure agarose necessary.....?
Message-ID: <9306111724.AA05050@mbcrr.harvard.edu>
Date: 11 Jun 93 17:24:09 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 1



From owner-rapd@net.bio.net Thu Jun 10 23:00:00 1993
Path: biosci!YVAX.BYU.EDU!anderswr
From: anderswr@YVAX.BYU.EDU (W. Ralph Andersen)
Newsgroups: bionet.molbio.rapd
Subject: RE: Question: Use of Ultra-pure agarose necessary.....?
Message-ID: <01GZ8X10JR8I8X4UXG@yvax.byu.edu>
Date: 11 Jun 93 19:38:42 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 8

I am interested in the acrylamide and silver staining.  Would you please
suggest a source for protocol?  Thanks.

Ralph Andersen
297 WIDB
BYU
Provo, Ut  84602


From owner-rapd@net.bio.net Thu Jun 10 23:00:00 1993
Path: biosci!daresbury!daresbury!not-for-mail
From: mbfw@s-crim1.dl.ac.uk (Frank Wright)
Newsgroups: bionet.molbio.rapd
Subject: Analysing RAPD data and designing expts
Message-ID: <1vab7mINNf1a@s-crim1.dl.ac.uk>
Date: 11 Jun 93 16:17:58 GMT
Organization: Daresbury Lab., Warrington, U.K.
Lines: 19
NNTP-Posting-Host: s-crim1.dl.ac.uk



I'm looking for a paper (in press?) that provides formulae for
calculating various population genetics statistics from RAPD
data and that offers advice on designing expts.  A few months
ago the author posted a brief summary of the paper's findings
on this newsgroup (or the old RAPD-L).  I've tried to locate
the article by using WAIS on biosci.src but with no luck.

Can anyone direct me to the original article, or (even better)
provide a reference to the published paper?

Thanks

Frank Wright
SASS, University of Edinburgh,
Edinburgh, Scotland

frank@sass.sari.ac.uk

From owner-rapd@net.bio.net Thu Jun 10 23:00:00 1993
Path: biosci!YVAX.BYU.EDU!anderswr
From: anderswr@YVAX.BYU.EDU (W. Ralph Andersen)
Newsgroups: bionet.molbio.rapd
Subject: RE: Question: Use of Ultra-pure agarose necessary.....?
Message-ID: <01GZ8XOEFBRM8X50ER@yvax.byu.edu>
Date: 11 Jun 93 19:57:33 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 9

Kirby:

We use standard lab agarose low EEO (Fisher for instance) for RAPDs----but
highly pure stuff for band extraction. (I don't rightly know why we use
highly pure stuff for that purpose, but we do----probably because others do
it and we don't dare to do otherwise----know what it mean?).

Ralph Andersen


From owner-rapd@net.bio.net Thu Jun 10 23:00:00 1993
Path: biosci!YVAX.BYU.EDU!anderswr
From: anderswr@YVAX.BYU.EDU (W. Ralph Andersen)
Newsgroups: bionet.molbio.rapd
Subject: Re: Operon address
Message-ID: <01GZ8XJAF5HE8X68BH@yvax.byu.edu>
Date: 11 Jun 93 19:53:25 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 7

MVS;

Regarding an address for "Operon".  I use their free phone number:
800 688 2248.

Ralph Andersen


From owner-rapd@net.bio.net Sun Jun 13 23:00:00 1993
Path: biosci!esvax.dnet.dupont.com!rafalski
From: rafalski@esvax.dnet.dupont.com
Newsgroups: bionet.molbio.rapd
Subject: Silver staining references
Message-ID: <9306141318.AA28043@esds01.es.dupont.com>
Date: 14 Jun 93 13:18:34 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 14

Re: Question about silver staining of RAPD gels:
THere are a number of papers from Peter Gresshoff's lab (U. of Tenn). on 
their DAF technique involving random primers and silver staining of 
acrylamide gels: for example see Appl.Microbiol.Biotechnol. 38(1992) 70-76
MGG 235 (1992) 157-165. The original paper is Bio/Technology 9(1991) 
553-557. I am told a kit employing their silver staining tehcnology is 
available from Promega.
John Carlson is using silver staining with RAPDs (Gressoff et al. use a 
somewhat different condsitions).
Also, I am told that the Phastgel system (Pharmacia) can be used.
Antoni Rafalski
rafalski@esvax.dnet.dupont.com



From owner-rapd@net.bio.net Sun Jun 13 23:00:00 1993
Path: biosci!DAX.CC.UAKRON.EDU!r1sss
From: r1sss@DAX.CC.UAKRON.EDU (Scott S Schaus)
Newsgroups: bionet.molbio.rapd
Subject: (none)
Message-ID: <9306141741.AA10872@dax.cc.uakron.edu>
Date: 14 Jun 93 17:41:02 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 10


 We are sending mail to see if this address exists.
If this is the proper site, send us info on how to log into the RAPD
discussion forum.

******************************************************************	
**	Scott S. Schaus		The University of Akron		**
**	r1sss@UAkron.edu 	Department of Biology		**
**	(216) 972-7155		Akron, OH 44325-3908		**
******************************************************************

From owner-rapd@net.bio.net Sun Jun 13 23:00:00 1993
Path: biosci!qbfelp.edu.ar!lagares
From: lagares@qbfelp.edu.ar
Newsgroups: bionet.molbio.rapd
Subject: Transfer of polyacrilamide gels
Message-ID: <067fk725@qbfelp.edu.ar>
Date: 11 Jun 93 16:44:42 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 36

We never used electrotransference for polyacrilamide gels.
This protocol was sent by Alena Leroux < Unit 129, INSERM, 24 rue du Fauburg
Saint Jacques, 75014 Paris, Ph:43-20-12-40 int:372, FAX: 46-34-68-70>
and work well for tranference of nucleic acids from 100 to 500 bp (1000
bp, may be). 

Standard conditions: Gel: 10 cm X 15 cm X 0.75 mm; 6-8% acrylamide; Run in
TBE buffer.

1. <Denaturation>  0.2M NaOH/0.6M NaCl for 30 minutes. Shake slowly.
2. <Fixation>      7% formaldehyde for 15 minutes. Twice.
3. <Transference>  Transfer in 10X SSC on membrane (Hybond or nitrocelulose,
                   presoaked in 10X SSC) 
4. <Fixation>      UV 2 min. (Hybond) or baking at 80 deg. C for 2 hrs
                   (nitrocelulose)





				        	Antonio Lagares
					        lagares@qbfelp.edu.ar



Quimica Biologica - IBBM
Facultad de Ciencias Exactas
Universidad Nacional de La Plata
47 y 115, 1900-LA PLATA
ARGENTINA

Phone:  +54-21-250497
FAX:    +54-21-259223
TELEX:  31151 BULAP AR; 31216 CESLA AR
E-mail: lagares@qbfelp.edu.ar
        

From owner-rapd@net.bio.net Sun Jun 13 23:00:00 1993
Path: biosci!daresbury!mrccrc!datherto
From: datherto@crc.ac.uk (Mr. D.J. Atherton)
Newsgroups: bionet.molbio.rapd
Subject: Re: Question: Use of Ultra-pure agarose necessary.....?
Message-ID: <1993Jun14.154330.17861@crc.ac.uk>
Date: 14 Jun 93 15:43:30 GMT
References: <01GZ8X10JR8I8X4UXG@yvax.byu.edu>
Sender: news@crc.ac.uk
Distribution: bionet
Organization: MRC Human Genome Resource Centre
Lines: 30
Nntp-Posting-Host: tin

Hi Netter,

IMHO, and probably a lot of others, the molbiol bible should do it:-
Sambrook, Fritsch, and Maniatis Bk 1 Chap 6 for PAGE
----Same guys again---          Bk 3 Chap ? for Silver staining
Silver staining method listed for protein detection, but works with DNA,
or try:-
Wash gel in water for 20min with gentle shaking
Wash gel in 0.3% Ammonia in water for 15min
Make up 150ml 0.15% Silver nitrate (AgNO3) - A clear soln
        then add 0.5ml freshly prepared 1M NaOH and stir vigourously - soln
	looks like white coffee
	With stirring, dropwise add conc ammonia until soln becomes clear
	(approx. 2ml)
Wash gel in above AgNO3/NaOH soln for 15min
Rinse thoroughly with water
Develop stain with 2% Na2CO3/0.2% Formamide - keep an eye on it, it tends
	to start slow then *bang* turns dark
Stop developing by copious rinsing with water.
Photograph immediately - just in case

Regards

David Atherton			datherton@uk.ac.ox.path.vax
Univ. Oxford
Oxford
Oxon
UK
!
.

From owner-rapd@net.bio.net Mon Jun 14 23:00:00 1993
Path: biosci!micro.uct.ac.za!ED
From: ED@micro.uct.ac.za ("Ed Rybicki")
Newsgroups: bionet.molbio.rapd
Subject: Re: Question: Use of Ultra-pure...silver staining...
Message-ID: <MAILQUEUE-101.930615095452.281@micro.uct.ac.za>
Date: 15 Jun 93 07:51:44 GMT
Sender: daemon@net.bio.net
Reply-To: ed@micro.uct.ac.za
Distribution: bionet
Lines: 71

> Hi Netter,
>
> IMHO, and probably a lot of others, the molbiol bible should do it:-
> Sambrook, Fritsch, and Maniatis Bk 1 Chap 6 for PAGE
> ----Same guys again---          Bk 3 Chap ? for Silver staining
> Silver staining method listed for protein detection, but works with DNA,
> or try:-

And another, from personal comm:


       RNA / DNA SILVER STAIN PROTOCOL FOR ACRYLAMIDE GELS


FROM: Moshe Balas, Volcani Centre, Rehovot, Israel

BY: Ed Rybicki, Dept Microbiology, University of Cape Town, Aug 1992

WORKS VERY WELL FOR VIROIDS, dsRNAs, AND REPUTEDLY FOR DNA ALSO


SHORT PROCEDURE:

1.   Soak in 30% EtOH / 10% acetic acid 10 min on bench, can
     leave up to O/N.

2.   Soak 10% EtOH 2x10 min, wash in ddH2O 3x5 min.

3.   Soak in 6 mM AgNO3 for 30 min (50 ml/gel), then quick rinse
     ddH2O.

4.   Rinse rapidly in fresh 2.5% Na2CO3 / 0.02% HCHO, then fresh
     soln. for 2 min or longer: develop in same solution till

     bands appear dense enough.

5.   Stop with 1% acetic and keep in same solution.

NB: CAN DESTAIN GELS WITH 2% AMMONIUM PEROXYDISULPHATE

NNB: CAN SHRINK GELS FOR STORAGE BY SOAKING IN ABSOLUTE EtOH,
     THEN ACETONE, THEN AIR-DRYING


LONG PROCEDURE:

1.   Soak polyacrylamide AFTER ELECTROPHORESIS in 50% EtOH / 10%
     acetic acid 1-3 hr or or overnight.

2.   Soak in 10% EtOH / 1% acetic acid 1 hr, rinse 3x in ddH2O.

3.   Soak in 12 mM AgNO3 1 hr, rinse 3x5 min in ddH2O.

4.   Rinse rapidly in fresh 0.75 M KOH / 0.28% HCHO, leave to
     develop in more of same solution till bands appear at
     sufficient contrast / density.

5.   Add XS H2O to stop or stop with 0.07 M Na2CO3 or 5% acetic
     acid.  Store in 1% acetic.
***********  ____________________________________________________________________
 | Ed Rybicki, PhD             |       "Lord, won't you buy me        |
 | (ed@micro.uct.ac.za)        |                                      |
 | Dept Microbiology           |         A Mer-ce-des Benz..."        |
 | University of Cape Town     |                                      |
 | Private Bag, Rondebosch     |                                      |
 | 7700, South Africa          |           - Janis Joplin             |
 | fax: 27-21-650 4023         |                                      |
  --------------------------------------------------------------------




From owner-rapd@net.bio.net Tue Jun 15 23:00:00 1993
Path: biosci!uwm.edu!math.ohio-state.edu!howland.reston.ans.net!usenet.ins.cwru.edu!news.uakron.edu!dax.cc.uakron.edu!r1sss
From: r1sss@dax.cc.uakron.edu (Scott S Schaus )
Newsgroups: bionet.molbio.rapd
Subject: New subscribers to RAPD newsgroup
Message-ID: <1993Jun16.174405.21669@news.uakron.edu>
Date: 16 Jun 93 17:44:05 GMT
Sender: news@news.uakron.edu
Distribution: bionet
Organization: The University of Akron, Akron, Ohio
Lines: 15

Greetings. We would like to know where the archived file(s) are that
contain all previous postings to this newgroup so that we may "catch-up"
on the current trends. This info may be forwarded by E-mail so as not to
tie up the discussion group.

Thanks :-)

Scott Schaus/Monte Turner


-- 
-------------------------------------------------------
Scott S. Schaus			The University of Akron	
r1sss@dax.cc.uakron.edu 	Department of Biology
(216) 972-7155			Akron, OH 44325-3908

From owner-rapd@net.bio.net Tue Jun 15 23:00:00 1993
Path: biosci!agate!usenet.ins.cwru.edu!neoucom.edu!news.uakron.edu!dax.cc.uakron.edu!r1sss
From: r1sss@dax.cc.uakron.edu (Scott S Schaus )
Newsgroups: bionet.molbio.rapd
Subject: New subscriber to RAPD newsgroup
Message-ID: <1993Jun16.174152.21544@news.uakron.edu>
Date: 16 Jun 93 17:41:52 GMT
Sender: news@news.uakron.edu
Distribution: bionet
Organization: The University of Akron, Akron, Ohio
Lines: 10

Thanks :-)

Scott Schaus/Monte Turner


-- 
-------------------------------------------------------
Scott S. Schaus			The University of Akron	
r1sss@dax.cc.uakron.edu 	Department of Biology
(216) 972-7155			Akron, OH 44325-3908

From owner-rapd@net.bio.net Wed Jun 16 23:00:00 1993
Path: biosci!sfu.ca!corley
From: corley@sfu.ca ("Graham Corley-Smith")
Newsgroups: bionet.molbio.rapd
Subject: RE: RAPD for population studies
Message-ID: <59027.corley@sfu.ca>
Date: 18 Jun 93 00:23:41 GMT
Sender: daemon@net.bio.net
Reply-To: corley@sfu.ca
Distribution: bionet
Lines: 33

In reply (see below) to your note:
>In Message Thu, 17 Jun 93 11:04:49 EDT, C017000 <C017@MUSIC.ULAVAL.CA> writes:
>Hi. I have been searching in the litterature and cannot find
>anything regarding the use of RAPD to study vertebrate
>populations. However, I found lots of references concerning
>the use of RAPD in plant studies. Is anyone aware of
>any work being done on trying to discriminate vertebrate
>populations with RAPDs?
>Thanks.
>Marie-Claire Baby
>Biology dept.
>U. Laval
>e-mail: c017@music.ulaval.ca

Yes there are people who use RAPD analysis for animals.  Publications on
insects (including bees, grasshoppers and mosquitos) are available in the
literature.  As for vertebrates, we have recently started using RAPD's on
zebrafish (Brachydanio rerio) at the Institute of Molecular Biology and
Biochemistry, Biological Sciences Department, Simon Fraser University.
However, Dr. John Postlewaite at the University of Oregon in Eugene Oregon,
has more experience than myself with RAPD analysis of zebrafish populations
and would be a good person to contact if you have specific questions.
_____
Graham E. Corley-Smith
Institute of Molecular Biology and Biochemistry
Simon Fraser University
Burnaby, B.C.,
V5A 1S6
Canada
Phone: (604) 291-3021
Fax:   (604) 291-3496



From owner-rapd@net.bio.net Wed Jun 16 23:00:00 1993
Path: biosci!MUSIC.ULAVAL.CA!C017
From: C017@MUSIC.ULAVAL.CA (C017000)
Newsgroups: bionet.molbio.rapd
Subject: RAPD for population studies
Message-ID: <17JUN93.11967208.0033.MUSIC@MUSIC.ULAVAL.CA>
Date: 17 Jun 93 15:04:49 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 11

Hi. I have been searching in the litterature and cannot find
anything regarding the use of RAPD to study vertebrate
populations. However, I found lots of references concerning
the use of RAPD in plant studies. Is anyone aware of
any work being done on trying to discriminate vertebrate
populations with RAPDs?
Thanks.
Marie-Claire Baby
Biology dept.
U. Laval
e-mail: c017@music.ulaval.ca

From owner-rapd@net.bio.net Sun Jun 20 23:00:00 1993
Path: biosci!uwm.edu!math.ohio-state.edu!howland.reston.ans.net!usenet.ins.cwru.edu!news.uakron.edu!dax.cc.uakron.edu!r1sss
From: r1sss@dax.cc.uakron.edu (Scott S Schaus )
Newsgroups: bionet.molbio.rapd
Subject: Re: RAPD-L availability
Message-ID: <1993Jun21.195235.12682@news.uakron.edu>
Date: 21 Jun 93 19:52:35 GMT
References: <204kp3INN7el@news.u.washington.edu>
Sender: news@news.uakron.edu
Distribution: usa
Organization: The University of Akron, Akron, Ohio
Lines: 21

In article <204kp3INN7el@news.u.washington.edu> toby@stein.u.washington.edu (Toby Bradshaw) writes:
>A colleague of mine, lacking a newsfeed, is interested in knowing
>if RAPD-L is still around.
>
Indeed it is! We just subscribed last week and all works fine. If you
lack newsgroup facilities, you can send/receive E-Mail from
biosci@net.bio.net. You can ftp into net.bio.net and obtain the
BIOSCI_info.sheet for complete instructions.

Good Luck,

-------------------------------------------------------
Scott S. Schaus			The University of Akron	
r1sss@dax.cc.uakron.edu 	Department of Biology
(216) 972-7155			Akron, OH 44325-3908
-------------------------------------------------------
-- 
-------------------------------------------------------
Scott S. Schaus			The University of Akron	
r1sss@dax.cc.uakron.edu 	Department of Biology
(216) 972-7155			Akron, OH 44325-3908

From owner-rapd@net.bio.net Sun Jun 20 23:00:00 1993
Path: biosci!agate!howland.reston.ans.net!wupost!kuhub.cc.ukans.edu!hubble.asymetrix.com!netnews.nwnet.net!news.u.washington.edu!stein.u.washington.edu!toby
From: toby@stein.u.washington.edu (Toby Bradshaw)
Newsgroups: bionet.molbio.rapd
Subject: Re: RAPD-L availability
Message-ID: <205a2kINNh10@news.u.washington.edu>
Date: 21 Jun 93 21:43:48 GMT
References: <204kp3INN7el@news.u.washington.edu> <1993Jun21.195235.12682@news.uakron.edu>
Distribution: usa
Organization: University of Washington, Seattle
Lines: 14
NNTP-Posting-Host: stein.u.washington.edu

In article <1993Jun21.195235.12682@news.uakron.edu> r1sss@dax.cc.uakron.edu (Scott S Schaus ) writes:
>In article <204kp3INN7el@news.u.washington.edu> toby@stein.u.washington.edu (Toby Bradshaw) writes:
>>A colleague of mine, lacking a newsfeed, is interested in knowing
>>if RAPD-L is still around.
>>
>Indeed it is! We just subscribed last week and all works fine. If you
>lack newsgroup facilities, you can send/receive E-Mail from
>biosci@net.bio.net. You can ftp into net.bio.net and obtain the
>BIOSCI_info.sheet for complete instructions.

Thanks to you and Jim Farmer for quick responses.

-Toby Bradshaw
toby@u.washington.edu

From owner-rapd@net.bio.net Sun Jun 20 23:00:00 1993
Path: biosci!agate!howland.reston.ans.net!darwin.sura.net!news-feed-1.peachnet.edu!umn.edu!gaia.ucs.orst.edu!osshe.edu!news.uoregon.edu!netnews.nwnet.net!news.u.washington.edu!stein.u.washington.edu!toby
From: toby@stein.u.washington.edu (Toby Bradshaw)
Newsgroups: bionet.molbio.rapd
Subject: RAPD-L availability
Message-ID: <204kp3INN7el@news.u.washington.edu>
Date: 21 Jun 93 15:40:19 GMT
Distribution: usa
Organization: University of Washington, Seattle
Lines: 8
NNTP-Posting-Host: stein.u.washington.edu

A colleague of mine, lacking a newsfeed, is interested in knowing
if RAPD-L is still around.

Toby Bradshaw                       |
Department of Biochemistry          |  Will make genetic linkage maps
and College of Forest Resources     |            for food.
University of Washington, Seattle   |
toby@u.washington.edu               |

From owner-rapd@net.bio.net Mon Jun 21 23:00:00 1993
Path: biosci!UMBSKY.CC.UMB.EDU!shiaris
From: shiaris@UMBSKY.CC.UMB.EDU (MICHAEL SHIARIS)
Newsgroups: bionet.molbio.rapd
Subject: Bacterial DNA extractions for RAPDs
Message-ID: <199306221528.AA00991@ns.umb.edu>
Date: 22 Jun 93 15:28:06 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 17


	Does anyone have a genomic DNA extraction procedure for bacteria that
will produce DNA pure enough for RAPD PCR?  

	We are looking at environmental isolates that produce copious 
polysaccharides that are difficult to remove.  Currently we are using a 
lysozyme-SDS procedure followed by 3 to 4 phenol/chloroform extractions.  We
have tried the CTAB method (from Current Protocols in Molecular Biology), but 
this still requires a follow up with phenol/chloroform.  Most of the isolates
that we are working with are pseudomonads from marine sediments.

	Thanks.

Michael Shiaris		Dept. Biology
shiaris@umbsky.cc.umb.edu	Univ. Massachusetts/Boston
				100 Morrissey Blvd.
				Boston, MA 02125

From owner-rapd@net.bio.net Mon Jun 21 23:00:00 1993
Path: biosci!MERCURY.UARK.EDU!DRHOADS
From: DRHOADS@MERCURY.UARK.EDU ("Doug Rhoads")
Newsgroups: bionet.molbio.rapd
Subject: Re: use of RAPDs as population markers
Message-ID: <120C84D1BFC@uamercury.uark.edu>
Date: 22 Jun 93 14:46:21 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Organization: University of Arkansas
Lines: 42

In a discussion of vertebrate RAPDs Marie-Claire Baby states-

>Thanks for your answer to my message. Yes, I have a specific
>question. I have not yet chosen the method I am going to use
>to realize my project right now, but I was wondering if
>it is possible to find distinct populations markers using
>RAPDs. By distinct markers, I mean something that would be
>unique to that population, probably using a combination of
>results obtained with various primers, instead of relying
>on frequencies like with allozymes and mtDNA.
>I will be working on fish populations and I don't know
>exactly what to expect. So far, we have tried the method
>on one population of atlantic tomcod and have obtained
>nice amplifications, but we still have to assay other populations
>to determine inter-population variability. Do you think that
>it is realistic to hope to find such distinct population
>markers?
>Marie-Claire Baby
>c017@music.ulaval.ca

    I really don't think you will find 'populations specific markers'
(psm?) as this would require that all members of a population derive from
an immutable locus from a single monophyletic source (founder).  The
likelihood that the population has been separated long enough and yet have
not diverged from a single ancestor (which is unlikely) is remote.  You
are asking for the population to have converged on a particular sequence.
I think in terms of frequencies of loci in a population you might be able
to bulk (ala Tanksley) DNAs from the population and then have particular
bands that NEVER show up in a population or a band that is ONLY
present in one population (note:not present in ALL members of the
population. These are negative experiments but I think they hold more
promise than looking for a marker that is present in all members of a
population that is absent in all other populations.

    Any one else have an opinion on this?? better yet facts!!



Doug Rhoads                  || Dept. of Biological Sciences
drhoads@mercury.uark.edu     || 601 Science Engineering
drhoads@uafsysb.uark.edu     || University of Arkansas
501-575-3251                 || Fayetteville, AR 72701

From owner-rapd@net.bio.net Mon Jun 21 23:00:00 1993
Path: biosci!parc!decwrl!decwrl!pdq.coe.montana.edu!news.uoregon.edu!netnews.nwnet.net!news.u.washington.edu!stein.u.washington.edu!toby
From: toby@stein.u.washington.edu (Toby Bradshaw)
Newsgroups: bionet.molbio.rapd
Subject: Re: use of RAPDs as population markers
Message-ID: <2076l6INNsgj@news.u.washington.edu>
Date: 22 Jun 93 14:57:42 GMT
References: <120C84D1BFC@uamercury.uark.edu>
Distribution: bionet
Organization: University of Washington, Seattle
Lines: 55
NNTP-Posting-Host: stein.u.washington.edu

In article <120C84D1BFC@uamercury.uark.edu> DRHOADS@MERCURY.UARK.EDU ("Doug Rhoads") writes:
>In a discussion of vertebrate RAPDs Marie-Claire Baby states-
>>I was wondering if
>>it is possible to find distinct populations markers using
>>RAPDs. By distinct markers, I mean something that would be
>>unique to that population, probably using a combination of
>>results obtained with various primers, instead of relying
>>on frequencies like with allozymes and mtDNA.
>>I will be working on fish populations and I don't know
>>exactly what to expect. So far, we have tried the method
>>on one population of atlantic tomcod and have obtained
>>nice amplifications, but we still have to assay other populations
>>to determine inter-population variability. Do you think that
>>it is realistic to hope to find such distinct population

>    I really don't think you will find 'populations specific markers'
>(psm?) as this would require that all members of a population derive from
>an immutable locus from a single monophyletic source (founder). 

Loss of markers at the "standard" mutation rate won't have a measurable
effect on most population genetics work, so I wouldn't worry about
"immutable".

>The
>likelihood that the population has been separated long enough and yet have
>not diverged from a single ancestor (which is unlikely) is remote.  You
>are asking for the population to have converged on a particular sequence.
>I think in terms of frequencies of loci in a population you might be able
>to bulk (ala Tanksley) DNAs from the population and then have particular
>bands that NEVER show up in a population or a band that is ONLY
>present in one population (note:not present in ALL members of the
>population. These are negative experiments but I think they hold more
>promise than looking for a marker that is present in all members of a
>population that is absent in all other populations.
>
>    Any one else have an opinion on this?? better yet facts!!

In the extreme case of population differentiation, speciation, we have
found that about 60% of the RAPDs we mapped in an F2 of interspecific
hybrids of Populus are fixed (judged by sampling 10 indiviudals from each
species, so hardly a rigorous test for true "fixation") for alternative
alleles in the two parental species, hence are useful for mapping in all
such interspecific F2s.  I would guess than in populations where drift is
a significant force in evolution, it will possible to find markers unique
to a population (only because it is possible to sample many, many loci but
impossible to sample all individuals of all populations for most species,
so that low frequency is practically equivalent to fixation).

Toby Bradshaw                       |
Department of Biochemistry          |  Will make genetic linkage maps
and College of Forest Resources     |            for food.
University of Washington, Seattle   |
toby@u.washington.edu               |

 

From owner-rapd@net.bio.net Mon Jun 21 23:00:00 1993
Path: biosci!MTS.UCS.UALBERTA.CA!USERFG13
From: USERFG13@MTS.UCS.UALBERTA.CA
Newsgroups: bionet.molbio.rapd
Subject: (none)
Message-ID: <3680038@mts.ucs.ualberta.ca>
Date: 21 Jun 93 23:11:38 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 1

SIGNOFF RAPD-L DENIAL CHONG

From owner-rapd@net.bio.net Mon Jun 21 23:00:00 1993
Path: biosci!BU-BIO.BU.EDU!williams
From: williams@BU-BIO.BU.EDU (Scott Williams)
Newsgroups: bionet.molbio.rapd
Subject: RE: RAPDs as population markers
Message-ID: <9306221418.AA03212@bu-bio.bu.edu>
Date: 22 Jun 93 14:18:54 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 21


Doug Rhoads recently argued that RAPDs will not be good as diagnostic
markers for populations becasue it is unlikely that a single fragment
will be fixed in a population ans presumably absent from other
]populations.  I agree with this assessment, however, that does not
necessariuly invalidate the use of RAPDs for population differentiation.
Assume you find one marker band using a single primer that is unique
to a population and in 30% of the individuals o this population.  If
everything is carefully controlled and tested then the presence of
this band can be used to conclusively say those individuals carrying it
are from that population (population A, say).  Using a second primer
you find that anothger fragment is unique to population A and is in 40@ of
the individuals (some identical to the first group of individuals some not).
This increases to pinpoint the population of origin.  With a third and fourht
primer you should follow the same logic to actually do a fairly good job of
determining the populations of origin.  

Using this sequential method may allow quite good resiloving power.

Scott Williams


From owner-rapd@net.bio.net Tue Jun 22 23:00:00 1993
Path: biosci!YVAX.BYU.EDU!anderswr
From: anderswr@YVAX.BYU.EDU (W. Ralph Andersen)
Newsgroups: bionet.molbio.rapd
Subject: Re: RAPD for population studies
Message-ID: <01GZPXW7U94Y8X9QV1@yvax.byu.edu>
Date: 24 Jun 93 00:07:37 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 3

Yes!  Try Dennis Shiazawa, Paul Evans in Current Contents author search
(1992-1993 should pick up a paper or two).


From owner-rapd@net.bio.net Thu Jun 24 23:00:00 1993
Path: biosci!NET.BIO.NET!kristoff
From: kristoff@NET.BIO.NET (David Kristofferson)
Newsgroups: bionet.molbio.rapd
Subject: IMPORTANT BIOSCI INFORMATION
Message-ID: <9306250900.AA00896@net.bio.net>
Date: 25 Jun 93 09:00:03 GMT
Sender: kristoff@net.bio.net
Distribution: bionet
Lines: 143


Three important items follow: BIOSCI archive searching by e-mail, the
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				Sincerely,

				Dave Kristofferson
				BIOSCI/bionet Manager

				kristoff@net.bio.net



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From owner-rapd@net.bio.net Thu Jun 24 23:00:00 1993
Path: biosci!parc!decwrl!decwrl!usenet.coe.montana.edu!netnews.nwnet.net!ns1.nodak.edu!plains!mcclean
From: mcclean@plains (Phillip McClean)
Newsgroups: bionet.molbio.rapd
Subject: AFLP Info
Message-ID: <C96xpF.LIA@ns1.nodak.edu>
Date: 25 Jun 93 18:51:15 GMT
Sender: usenet@ns1.nodak.edu (Usenet login)
Organization: North Dakota Higher Education Computing Network
Lines: 6
Nntp-Posting-Host: plains.nodak.edu
X-Newsreader: Tin 1.1 PL4

I recently became aware of AFLPs.  Does anyone have any info to share
regarding this technology?

Phil McClean
North Dakota State University
mcclean@plains.nodak.edu

From owner-rapd@net.bio.net Fri Jun 25 23:00:00 1993
Path: biosci!JESTER.USASK.CA!lur
From: lur@JESTER.USASK.CA (Rui Lu)
Newsgroups: bionet.molbio.rapd
Subject: (none)
Message-ID: <9306260037.AA13156@jester.usask.ca>
Date: 26 Jun 93 00:37:10 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 1

signoff rapd-l RUI LU

From owner-rapd@net.bio.net Fri Jun 25 23:00:00 1993
Path: biosci!MACC.WISC.EDU!JCHEN
From: JCHEN@MACC.WISC.EDU (Jianchi Chen)
Newsgroups: bionet.molbio.rapd
Subject: Stoffel fragment?
Message-ID: <23062601122202@vms2.macc.wisc.edu>
Date: 26 Jun 93 06:12:00 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 11

Hi, netters,
 
Can anybody explain me what is "Stoffel fragment"?  I saw it in some
previous postings.
 
J.Chen
Department of Food Microbioloby and Toxicology
University of Wisconsin
 
JCHEN@MACC.WISC.EDU
 

From owner-rapd@net.bio.net Sun Jun 27 23:00:00 1993
Path: biosci!esvax.dnet.dupont.com!rafalski
From: rafalski@esvax.dnet.dupont.com
Newsgroups: bionet.molbio.rapd
Subject: AFLPs
Message-ID: <9306281205.AA13702@esds01.es.dupont.com>
Date: 28 Jun 93 12:05:02 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 5

Regarding a question from Phil McClean :
To find out more about AFLPs read European patent application  92402629.7 
(Eoropean Patent Office Publication Number  0 534 858 A1)
Antoni


From owner-rapd@net.bio.net Sun Jun 27 23:00:00 1993
Path: biosci!micro.uct.ac.za!ED
From: ED@micro.uct.ac.za ("Ed Rybicki")
Newsgroups: bionet.molbio.rapd
Subject: Re: AFLP Info
Message-ID: <MAILQUEUE-101.930628100456.494@micro.uct.ac.za>
Date: 28 Jun 93 07:54:41 GMT
Sender: daemon@net.bio.net
Reply-To: ed@micro.uct.ac.za
Distribution: bionet
Lines: 51

> To:            rapd@net.bio.net
> From:          mcclean@plains (Phillip McClean)
> Subject:       AFLP Info
> Date:          25 Jun 93 18:51:15 GMT

> I recently became aware of AFLPs.  Does anyone have any info to share
> regarding this technology?

Yes - we had a talk from one of the originators of the technique, which is
proprietary to KEYGENE (NV?) of The Netherlands.  Apparently all is to be
published soon, and vast amounts of data will be unleashed on the
unsuspecting RAPD community, and it will look like the best thing since
PCR (sorry, thermal cycling).

Basically, one chops up genomic DNA using a six cutter, end-labels with
biotin, and then chops up all with a four-cutter.  6-cutter gives (thumb-
suck) 10exp6 frags from (eg) tobacco genome; 4-cutter gives (ts)
10exp8...but if you hook out only biotin-labelled frags, get only what was
6-cut and has at least one labelled end (eg 10exp6 frags, now of smaller
average size).  Then ligate on linkers, and PCR (sorry, tc) with primers
which are longer by one base (or two, or three) than the linker: thus only
one in 4 (or 16, or 64) of primers will elongate; multiply probabilities
by other primer possibilities (1 in 16, or 256, or 4096) and you see how
one can fine-tune number of fragments amplified.  And fragments will
amplify very nicely, as discrete and sharp bands, because one is using
long primers and conditions ensuring near-or perfect match.  Run out on
sequencing-type acrylamide gels, and get 10exp2 or 3 bands, razor-sharp,
reproducible (NB: IN THEIR HANDS!!!).  Touted as THE answer to screening
for genetic diversity/near isogenic line differences/markers - IF DONE BY
THEIR PROTOCOLS - AND ALL IS PATENTED!!!

VERY impressive in presentation, and Keygene are closely tied up with a
number of Dutch companies, using the technology to screen their products.
They will license labs to do it, given payment of fee (large, I
understand), and use of their tech/methods/software.

Sorry, can't find card - but a directory of Dutch Biotech companies will
locate them very quickly.

  ____________________________________________________________________
 | Ed Rybicki, PhD             |       "Lord, won't you buy me        |
 | (ed@micro.uct.ac.za)        |                                      |
 | Dept Microbiology           |         A Mer-ce-des Benz..."        |
 | University of Cape Town     |                                      |
 | Private Bag, Rondebosch     |                                      |
 | 7700, South Africa          |           - Janis Joplin             |
 | fax: 27-21-650 4023         |                                      |
  --------------------------------------------------------------------




From owner-rapd@net.bio.net Sun Jun 27 23:00:00 1993
Path: biosci!uwm.edu!ux1.cso.uiuc.edu!howland.reston.ans.net!wupost!uunet!mcsun!sun4nl!sun2.iend.wau.nl!PVECK@rcl.wau.nl
From: pveck@rcl.wau.nl
Newsgroups: bionet.molbio.rapd
Subject: Re: AFLP Info
Message-ID: <C9BtEq.Lt@sun2.iend.wau.nl>
Date: 28 Jun 93 10:06:26 GMT
References: <C96xpF.LIA@ns1.nodak.edu>
Sender: news@sun2.iend.wau.nl (Newsmanager WAU)
Reply-To: pveck@rcl.wau.nl
Organization: Wageningen Agricultural University
Lines: 32

In article <C96xpF.LIA@ns1.nodak.edu>, mcclean@plains (Phillip McClean) writes:
>I recently became aware of AFLPs.  Does anyone have any info to share
>regarding this technology?
>
>Phil McClean
>North Dakota State University
>mcclean@plains.nodak.edu

Yes, I do know about AFLP, although I do not know whether we mean the same
technique. AFLP, Amplified Fragm.Length Polymorphism is a technique 
developed
by a company called KeyGene, SciencePark, Wageningen, The Netherlands
It combines the best of a PCR based technique with the reproduciblity of
RFLPs. The technique is patented, and will be commercialized in a kit. 

Outline:                                        4
Restriction digestion
Sticky end ligation with 'adaptor'
annealing with primer which is basepairing with
     the adaptor and the restriction site and two or three extra 
     nucleotides.
		This is a selective step, because only a few of all
		restriction fragments will be compatible with the
		primer.
PCR
separation.

I'm leaving out details which are not necessairy to understand the
principle. The results are amazing. Reproducible patterns which
monitor about 100 loci simultaneously.

Herman van Eck

From owner-rapd@net.bio.net Sun Jun 27 23:00:00 1993
Path: biosci!ACD.TUSK.EDU!PRAKASH
From: PRAKASH@ACD.TUSK.EDU
Newsgroups: bionet.molbio.rapd
Subject: Answer to what is Stoffel Fragment?
Message-ID: <01GZWT2J02EA0000MP@Acd.Tusk.Edu>
Date: 28 Jun 93 17:05:49 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Organization: Tuskegee University
Lines: 28

J. Chen of Univ. of Wisconsin asked what is Stoffel Fragment?

Stoffel fragment is the truncated version of the Amplitaq DNa polymerase.

About 289 aminoacids in the N-terminal region are missing in Stoffel.

Stoffel fragment has higher thermostability, no 3' to 5' or 5' to 3'

exonuclease activity but lower processivity, so you have to use twice

as much as Amplitaq.  We find Stoffel fragment to be better than

Amplitaq in our RAPD analysis of sweetpotato genotypes as they

produce more complex and thus informative polymorphisms.

US Biochemicals also produce their version of Stoffel called as

DeltaTaq.  We find it produces very similar results as Stoffel.

To my knowledge, no one (including those at Cetus) knows why Stoffel

works better.

C. S. Prakash
Tuskegee University
(205) 727 8023
Prakash@Tusk. Edu

From owner-rapd@net.bio.net Sun Jun 27 23:00:00 1993
Path: biosci!daresbury!daresbury!news
From: UDBR150@OAK.CC.KCL.AC.UK
Newsgroups: bionet.molbio.rapd
Subject: sequencing
Message-ID: <1993Jun28.144514.3082@gserv1.dl.ac.uk>
Date: 28 Jun 93 14:45:00 GMT
Sender: list-admin@daresbury.ac.uk
Distribution: bionet
Lines: 5
Original-To: RAPD@UK.AC.DARESBURY

has anyone out ther tried the new promega silver staining kit for DNA
sequencing. 
 Any info on price, efficiency, value, and basicaly is it worth the money?
 All comments wanted
 Dave Roberts, Kings college London

From owner-rapd@net.bio.net Mon Jun 28 23:00:00 1993
Path: biosci!JESTER.USASK.CA!lur
From: lur@JESTER.USASK.CA (Rui Lu)
Newsgroups: bionet.molbio.rapd
Subject: (none)
Message-ID: <9306291913.AA12181@jester.usask.ca>
Date: 29 Jun 93 19:13:23 GMT
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SIGNOFF Rui Lu

From owner-rapd@net.bio.net Mon Jun 28 23:00:00 1993
Path: biosci!JESTER.USASK.CA!lur
From: lur@JESTER.USASK.CA (Rui Lu)
Newsgroups: bionet.molbio.rapd
Subject: (none)
Message-ID: <9306291913.AA12162@jester.usask.ca>
Date: 29 Jun 93 19:13:04 GMT
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SIGNOFF RAPD-L Rui Lu

From owner-rapd@net.bio.net Mon Jun 28 23:00:00 1993
Path: biosci!YVAX.BYU.EDU!anderswr
From: anderswr@YVAX.BYU.EDU (W. Ralph Andersen)
Newsgroups: bionet.molbio.rapd
Subject: (none)
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Date: 30 Jun 93 00:44:15 GMT
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Anybody see this problem?  We have seen it with amplitaq and occaisionally
with Stoffel.  We are screening two sugarcane parents for RAPD
polymorphisms (a polymorphism in one parent and not the other).  Then we
screen a sample of their progeny to prove heterozygosity for the marker. 
Then we screen the mapping porgeny for segregation patterns for the
single-parent-heterozygous marker.  Now and then we will find that a given
primer will show faithful and numerous bands in the parents, but will show
only a single major band when applied to all the progeny.  This anomally
will appear throughout the progeny----one major band is amplified and there
are a few dim background bands.  We are reasonably sure that we are not
making mistakes in cocktail makeup. (We use the Biomek).  What's wrong with
us?

Ralph


From owner-rapd@net.bio.net Tue Jun 29 23:00:00 1993
Path: biosci!PSUVM.PSU.EDU!DBF1
From: DBF1@PSUVM.PSU.EDU ("Douglas Furtek")
Newsgroups: bionet.molbio.rapd
Subject: Unexplained absence of bands
Message-ID: <9306300016.AA07581@net.bio.net>
Date: 30 Jun 93 00:18:00 GMT
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Ralph, nothing is wrong.  Check out "M.  Heun and T.  Heltentjaris,
Inheritance of RAPDs in F1 hybrids of corn, TAG (1993) 85:961-968." To quote
the authors,"Nevertheless, since many of our unexplained results could be
attributed to the 'competition' amongst fragments where one very intense
product seemed to outcompete and overwhelm other expected fragments, even
those of very high yields in inbred situations, one should use caution with
certain applications." (We have not seen this with cacao - yet.) Good luck.

From owner-rapd@net.bio.net Wed Jun 30 23:00:00 1993
Path: biosci!agate!howland.reston.ans.net!darwin.sura.net!news-feed-1.peachnet.edu!umn.edu!gaia.ucs.orst.edu!osshe.edu!news.uoregon.edu!netnews.nwnet.net!news.u.washington.edu!stein.u.washington.edu!toby
From: toby@stein.u.washington.edu (Toby Bradshaw)
Newsgroups: bionet.molbio.rapd
Subject: Re: Addresses of primer makers
Message-ID: <20ve3c$9r3@news.u.washington.edu>
Date: 1 Jul 93 19:31:56 GMT
References: <01H00ZRP35J68WYG4X@yvax.byu.edu>
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In article <01H00ZRP35J68WYG4X@yvax.byu.edu> anderswr@YVAX.BYU.EDU (W. Ralph Andersen) writes:
>We have screened all of Operon 10-mer primers for a project.  I have
>misplaced my file on addresses of other manufacturers of our favorite RAPDs
>primers.  Can anyone help me out on this?  I need some addresses of good
>tried and true companies----a couple of addresses will probably do the job.

You can also just use pairs of the Operon primers, giving you n^2
primers to try.  It's worked well for me.

Toby Bradshaw                       |
Department of Biochemistry          |  Will make genetic linkage maps
and College of Forest Resources     |            for food.
University of Washington, Seattle   |
toby@u.washington.edu               |

From owner-rapd@net.bio.net Wed Jun 30 23:00:00 1993
Path: biosci!YVAX.BYU.EDU!anderswr
From: anderswr@YVAX.BYU.EDU (W. Ralph Andersen)
Newsgroups: bionet.molbio.rapd
Subject: Addresses of primer makers
Message-ID: <01H00ZRP35J68WYG4X@yvax.byu.edu>
Date: 1 Jul 93 22:00:10 GMT
Sender: daemon@net.bio.net
Distribution: bionet
Lines: 6

We have screened all of Operon 10-mer primers for a project.  I have
misplaced my file on addresses of other manufacturers of our favorite RAPDs
primers.  Can anyone help me out on this?  I need some addresses of good
tried and true companies----a couple of addresses will probably do the job.
 Thanks.  Ralph


