Nensorb20 query

[John Alsobrook]

In <930225163657.20213945 at FCRFV2.NCIFCRF.GOV> FORNACE at FCRFV2.NCIFCRF.GOV writes:

> Hi Netters,
> 
> A simple methods query:  how much organic solvent
> will interfere with oligonucleotide binding to
> Duponts Nensorb20?  
> e.g., after a phenol/chloroform extraction, is the
> level of organic solvent in the aqueous phase a 
> problem.  Can it be overcome by diluting (how much)
> or by extracting with something like ether and then
> blowing off the ether?
> 
> Thanks
> 
> Al Fornace
> email: fornace at ncifcrf.gov


Can't answer your question directly, but I used to use Nensorb20s to purify
32-P end-labelled oligos; I never bothered with an organic extraction, I 
just killed the enzyme with heat (65C for 5 minutes, or something like that)
then followed the Nensorb protocol (MeOH, TTE, etc). Everything worked fine.
So the short version is: if you don't use phenol, it won't interfere!

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* John Alsobrook    Child Study Center    Yale University School of Medicine *
* internet: alsobrook at biomed.med.yale.edu / bitnet: alsobrook at yalemed.bitnet *
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