Dhps^{tm2c(EUCOMM)Wtsi}

The L1L2_Bact_P cassette was inserted at position 85798794 of Chromosome 8 upstream of exon 2 (Build GRCm39). The cassette is composed of an FRT site followed by lacZ sequence and a loxP site. This first loxP site is followed by neomycin resistance gene under the control of the human beta-actin promoter, SV40 polyA, a second FRT site and a second loxP site. A third loxP site is inserted downstream of exon 7 at position 85801230. Exons 2-7 are thus flanked by loxP sites. A "conditional ready" (floxed) allele was created by flp recombinase expression in mice carrying this allele to remove the lacZ sequence and neo selection cassette, leaving loxP sites flanking exons 2-7. (J:236582)