Tpp1^tm1Plob

A floxed neo cassette was inserted into intron 11 and a missense mutation causing Arg446His was engineered within exon 11. Northern blot and RT-PCR analysis revealed that most of the mutant transcripts were mis-spliced and an enzyme assay for the gene product (tripeptidyl peptidase I) revealed no detectable activity. (J:94884)