Insr^tm1Khn

Exon 4 was left flanked by single loxP sites after a downstream floxed neo cassette was removed via in vitro cre mediated recombination. Deletion of the resultant floxed fragment will result in a frameshift mutation that introduces a stop codon. Translation, if it were to occur, would putatively produce a truncated peptide consisting of 308 amino terminal residues and lacking the high affinity binding site, transmembrane domain, and kinase domain. (J:51266)