Ras蛋白超家族结构上均由190个左右的氨基酸残基构成,仪有一个GTP酶结构域。Ras及相关蛋白在众多的细胞调节过程中起着关键作用,包括细胞增殖与分化,胞内胞液间运输,胞内氧化酶的产生,细胞骨架的调控以及胞外信息的跨膜传递等分子开关作用。 The structure of the Ras superfamily consists of about 190 amino acid residues and has a GTPase domain. Ras and related proteins play key roles in numerous cellular processes including cell proliferation and differentiation, intracellular transport of cytosol, production of intracellular oxidases, regulation of cytoskeleton, and transmembrane transmission of extracellular information Switch role.