ran是ras超家族的一種小的gtp結合蛋白，與核膜相關，被認為通過與其他蛋白的相互作用來控制多種細胞功能。這個基因編碼一個非常大的ran結合蛋白，免疫定位到核孔復合體。該蛋白是一個巨大的支架和嵌合體親環素相關的核孔蛋白參與了ran-gtpase循環。編碼蛋白直接與E2酶UBC9相互作用，并強烈促進SUMO1從UBC9轉移到SUMO1靶點SP100。這些發現將sumoylation定位于核孔復合體的細胞質絲，并表明，對于某些底物，修飾和核導入是相互關聯的事件。該基因在位于染色體2q重組熱點的基因簇中部分復制。[由RefSeq提供，2008年7月]
RAN is a small GTP-binding protein of the RAS superfamily that is associated with the nuclear membrane and is thought to control a variety of cellular functions through its interactions with other proteins. This gene encodes a very large RAN-binding protein that immunolocalizes to the nuclear pore complex. The protein is a giant scaffold and mosaic cyclophilin-related nucleoporin implicated in the Ran-GTPase cycle. The encoded protein directly interacts with the E2 enzyme UBC9 and strongly enhances SUMO1 transfer from UBC9 to the SUMO1 target SP100. These findings place sumoylation at the cytoplasmic filaments of the nuclear pore complex and suggest that, for some substrates, modification and nuclear import are linked events. This gene is partially duplicated in a gene cluster that lies in a hot spot for recombination on chromosome 2q. [provided by RefSeq, Jul 2008]