Slc9a8^{tm1d(KOMP)Wtsi}

The L1L2_gt1 cassette was inserted at position 167282591 of Chromosome 2 upstream of the critical exon 4 (Build GRCm39). The cassette is composed of an FRT flanked lacZ/neomycin sequence followed by a loxP site. An additional loxP site is inserted downstream of exon 4 at position 167283331. Exon 4 is thus flanked by loxP sites. A null/knockout allele was created by flp and cre recombinase expression in mice carrying this allele to remove the lacZ sequence, neo selection cassette and the loxP-flanked exon 4. Western blot analysis confirmed the absence of protein expression in the male and female reproductive system and kidney of adult homozygous mutant mice. (J:245977)