Sema5a^tm1Awp

A targeting vector was designed to replace exons 4 and 5 with a PGK-neo cassette. The null allele was achieved by inserting a stop codon after amino acid 121, thereby rendering a truncated protein unlikely to be biological active. Alternatively, aberrant splicing between exons 3 and 6 would result in the generation of a stop codon after amino acid 141. Western blot analysis of membrane fractions demonstrated a complete lack of protein in mutants. (J:97663)