Tg(MMTV-Erbb2)NK1Mul

This transgene contains the MMTV (mouse mammary tumor virus) LTR promoter, a 4.6 kb cDNA from the rat Erbb2 (avian erythroblastosis B2) oncogene, and an SV40 polyadenylation site sequence. The activated form of the rat gene is used in this construct, which differs from the wild-type allele by a point mutation, Val664Glu. Non-uniform and random transgene expression is detected by RNase protection assay in mammary gland epithelium from hemizygous transgenic mice. Six transgenic lines were produced (NA, NB, NF, NK, NL and NM). (J:48632)