Prrt2^{tm1d(KOMP)Wtsi}

The L1L2_Bact_P cassette was inserted at position 126618446 of Chromosome 7 upstream of the critical 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 a 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 the targeted exon at position 126619783. The critical exon 2 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 critical exon 2. Further information on targeting strategies used for this and other IKMC alleles can be found at http://www.informatics.jax.org/mgihome/nomen/IKMC_schematics.shtml. Immunohistochemistry and Western blot analysis confirmed absence of protein in the cerebellar cortex and liver, respectively, of homozygotes. (J:299667)