TC10 Proteins and Enzymes

TC10 is a member of the Rho family of GTP-binding proteins and is closely related to Cdc42 and Rac 1. Cycling between inactive and active GTP-bound state, active TC10 can directly interact with Cdc42 kinase, p21-activated protein kinases as well as other kinases (1). Constitutive expression of active TC10 mutants (TC10/Q75L) in fibroblast decrease actin stress fiber and formation of plasma membrane microspikes, while wild type TC10 has no effect on fibroblast cell morphology (2). Mostly expressed in adipose and muscle tissues, TC10 has been found to be activated by C3G (from the insulin pathway) in adipocytes (3).