Purification of cosmid DNA
Mr. O.Coutelle NIMR
olli at crc.ac.uk
Wed Nov 23 10:00:05 EST 1994
In article <1994Nov18.182357.78048 at kuhub.cc.ukans.edu>, kannan at kuhub.cc.ukans.edu writes:
> I would like to know what's the best way to purify cosmid DNA. the average
> insert size in the cosmid library is about 40 kb. i am interested in both
> good quality DNA and high yield. Could someone familiar with this give some
> Is there any kit available. Will th Wizard plasmid prep kit work for such
> a ig size of DNA.
> Thanks in advance.
> Kannan Thiru. University of Kansas.
I have had extremely good results with the quiagen Midi-kit. From 250mls of o/n culture
I obtained about 40ug of DNA, which I used for dirtect cycle sequencing with the ABI
Taq terminator kit, and walking primers, which gave about 550bp of excellent sequence.
For quick digests, I found the wizard miniprep most convenient, but it yields only
about 1-3ug from 3ml culture.
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