This gene encodes a protein that associates with the nuclear pore complex and participates in the regulation of nuclear transport. The encoded protein interacts with Ras-related nuclear protein 1 (RAN) and regulates guanosine triphosphate (GTP)-binding and exchange. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013],Fug1, RANGAP, SD,Cell Biology & Developmental Biology,Cell Cycle,Epigenetics & Nuclear Signaling,Nuclear Receptor Signaling,RANGAP1