16
Oct
Ran Ser135P shares common subcellular localization with active PAK4. Terry et al., 2007). Ran activity depends on its GTP/GDP cycle, and the subcellular localization of its regulatory Santacruzamate A enzymes. Indeed, the Ran exchange factor RCC1 is chromatin bound, whereas RanGAP1 and its accessory proteins RanBP1 and RanBP2 are essentially cytoplasmic during interphase. This partitioning restricts Ran-GTP to the nucleus and Ran-GDP to the cytoplasm (Clarke and Zhang, 2008). Nucleocytoplasmic shuttling is regulated by Ran-GTP binding to its effectors, which belong to the importin and exportin (CRM1) family. Nuclear localization sequence (NLS)Cbearing proteins bind the importins in the cytoplasm and…