Heph^sla

The mutation in the sla mouse is thought to be a 3.5 kb deletion with breakpoints distal to exon 9 and proximal to exon 12. RT-PCR analysis of mRNA derived from intestine of homozygous mice confirmed that 582 nt of sequence was absent, and predicts an in-frame omission of 194 aa from the encoded protein. Northern blot analysis confirmed that a smaller message was made in homozygous mice. Immunohistochemistry of homozygotes detects HEPH staining only in the supreanuclear compartment of intestinal enterocgyes. (J:52535, J:149735)