Subject: Re: CaSpeR-hs Dear Lynn, Here is a sequence run off a GMR vector. The specific insert, a Src29A cDNA, was cloned after the RI site and is deleted here, so this sequence should be common to all GMRs. The primer was made to Casper-hs sequence upstream of the Xho site, pointing forward into the promoter. The sequence begins with a match to casper-hs up to the Xho site, about base 20. Then the glass pentamer begins after the Xho- all 5 repeats are perfect. This goes into a Sal site and polylinker (about base 200), and then the promoter sequence. It ends with the PCR primer B. Hay lists in Dev. 120:2121 , terminating in the EcoRI cloning site. Presumably the rest of GMR is identical to casper-hs. The sequence is SS but unambiguous. Hope it helps! If you have any trouble putting the whole plasmid together based on this let me know. GMR-Src29A promoter region, 497 bp: TTTGGCAGAAAGAAAAcTCGAGCCCAGTGGAAACCCTTGAAATGCCTTTAAGTCGAG CCCAGTGGAAACCCTTGAAATGCCTTTAAGTCGAGCCCAGTGGAAACCCTTGAAATG CCTTTAAGTCGAGCCCAGTGGAAACCCTTGAAATGCCTTTAAGTCGAGCCCAGTGGA AACCCTTGAAATGCCTTTAAGTCGACTCTAGAGGATCCGCGGCCGCGGGTACCGGGG GATCCGGCGAAAAGAGCGCCGGAGTATAAATAGAGGCGCTTCGTCTACGGAGCGACA ATTCAATTCAAACAAGCAAAGTGAACACGTCGCTAAGCGAAAGCTAAGCAAATAAAC AAGCGCAGCTGAACAAGCTAAACAATCTGCAGTAAAGTGCAAGTTAAAGTGAATCAA TTAAAAGTAACCAGCAACCAAGTAAATCAACTGCAACTACTGAAATCTGCCAAGAAG TAATTATTGAATACAAGAAGAGAACTCTGAATAGGGAATTC Kevin Edwards =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=