ST5 Polyclonal Antibody

ST5 was identified by its ability to suppress the tumorigenicity of Hela cells in nude mice. Suppression of tumorigenicity 5 protein encoded by ST5 contains a C-terminal region that shares similarity with the Rab 3 family of small GTP binding proteins. This protein preferentially binds to the SH3 domain of c-Abl kinase, and acts as a regulator of MAPK1/ERK2 kinase, which may contribute to its ability to reduce the tumorigenic phenotype in cells. Three alternatively spliced transcript variants of this gene encoding distinct isoforms are identified.