Lig4^tm2.1Fwa

A targeting vector, containing the R278H (CGC to CAT) substitution and a floxed neomycin resistance (NeoR) gene, was inserted into the locus. The neo was subsequently removed via cre-mediated recombination. Western-blot analysis, performed on total lysate of thymocytes, showed that the mutant protein was expressed at slightly reduced levels as compared to wild-type. (J:157574)