Current Progress on the Small GTPase Gene Superfamily in Plants

In recent years, small G proteins have become an intensively studied group of regulatory GTP hydrolyses involved in cell signaling. The small G-protein superfamily includes Ras, Rho, Rab, Arf and Ran homologs, which take part in numerous and diverse cellular processes, such as gene expression, cytoskeletal reorganization, microtubule organization, and vesicular and nuclear transport. These proteins, functioning as molecular switches, share a...