Segregation of nuclear and cytoplasmic processes facilitates regulation of many eukaryotic cellular functions such as gene expression and cell cycle progression. Trafficking through the nuclear pore requires a number of highly conserved soluble factors that escort macromolecular substrates into and out of the nucleus. The Mog1 protein has been shown to interact with RanGTP which stimulates guanine nucleotide release, suggesting Mog1 regulates the nuclear transport functions of Ran. The human homologue of Mog1 is thought to be alternatively spliced [1,2,3,4].

1: A protein required for nuclear-protein import, Mog1p, directly interacts with GTP-Gsp1p, the Saccharomyces cerevisiae ran homologue. Oki M, Nishimoto T; Proc Natl Acad Sci U S A 1998;95:15388-15393. PMID:9860978

2: 1.9 A resolution crystal structure of the Saccharomyces cerevisiae Ran-binding protein Mog1p. Stewart M, Baker RP; J Mol Biol 2000;299:213-223. PMID:10860733

3: Identification of a conserved loop in Mog1 that releases GTP from Ran. Steggerda SM, Paschal BM; Traffic 2001;2:804-811. PMID:11733047

4: Identification and characterization of the human MOG1 gene. Marfatia KA, Harreman MT, Fanara P, Vertino PM, Corbett AH; Gene 2001;266:45-56. PMID:11290418