Bloc1s5^mu-Btlr

This mutation, discovered among progeny of an ENU-mutagenized male mouse, was mapped to Chromosome 13 and has been identified as a T-to-A transversion at nucleotide position 4028 of the gene (Genbank genomic region NC_000079). The mutation is in the first intron, seven nucleotides upstream from the beginning of exon 2, and impairs the acceptor splice site of intron 1. (J:137494)