From owner-celegans@net.bio.net Tue Aug 23 23:00:00 1994 Path: biosci!GENEKIT.MEDGEN.UBC.CA!msrayko From: msrayko@GENEKIT.MEDGEN.UBC.CA ("Martin A. Srayko") Newsgroups: bionet.celegans Subject: quantitation of extrachromosomal arrays Date: 23 Aug 1994 17:50:20 -0700 Organization: BIOSCI International Newsgroups for Molecular Biology Lines: 16 Sender: daemon@net.bio.net Distribution: world Message-ID: <9408240047.AA03695@genekit.medgen.ubc.ca> NNTP-Posting-Host: net.bio.net I am interested in quantitating the number of copies of a gene that resides in an extrachromosomal array (along with rol-6) for a number of different transgenic lines. Each of these lines exhibit slightly different transmission frequencies, so I don't think isolating genomic DNA from Rollers, followed by standard Southern analysis and densitometry on band intensities would be the best way to go (unless there is a way to select for Rollers that I am unaware of). I am considering quantitative PCR and would appreciate anyone's comments and/or protocols on this or any other strategy. You can e-mail me at: msrayko@genekit.medgen.ubc.ca Thanks, Martin Srayko .