Lrit1^{tm1b(EUCOMM)Hmgu}

The L1L2_Bact_P cassette was inserted at position 36778762 of Chromosome 14 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 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 2 at position 36779917. The critical exon 2 is thus flanked by loxP sites. Cre expression without flp expression created a reporter knockout mouse. 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. Western blot analysis cofirmed the absence of protein expression in retinas. (J:260354)