From owner-drosophila@net.bio.net Thu Jun 30 23:00:00 1994 Path: biosci!galaxy.ucr.edu!ihnp4.ucsd.edu!usc!howland.reston.ans.net!newsserver.jvnc.net!newsserver.cshl.org!newsserver.cshl.org!news From: jonesc@phage.cshl.org (jonesc) Newsgroups: bionet.drosophila Subject: CaSpeR cloning - Help sought Date: 1 Jul 1994 18:01:47 GMT Organization: Cold Spring Harbor Lab Lines: 11 Message-ID: <2v1lmbINNh6n@phage.cshl.org> NNTP-Posting-Host: portoa6.cshl.org X-Posted-From: InterNews 1.0.1@davis-lc.cshl.org X-Authenticated: jonesc on POP host phage.cshl.org A colleague and I have been struggling to subclone various genomic fragments (ca. 8-12 kb) into pCaSpeR4 for plasmid rescue experiments, but have been having the devil's own time getting recombinant plasmids. Does anyone have any suggestions beyond using massive amounts of insert and vector (which we've been doing) and Herculean effort (ditto)? Is there something peculiar/tricky about this vector, or large vectors, or large inserts? I've tried looking around in what seem to me the right places, but have come up empty-handed. Thanks for any help you have to offer. Chris Jones (jonesc@cshl.org) .