TC21/R-Ras2: Proteins and Enzymes

Teratocarcinoma oncogene 21 (TC21), also known as R-Ras2, is a small GTP-binding protein of the Ras superfamily of GTPases. TC21 comprises an R-Ras subfamily with fellow members R-Ras and M-Ras (R-Ras3). Overexpression and activating mutations of TC21 have been reported in several tumor tissues and cell lines.