RanGAP Antibody- Rabbit Anti-RanGAP
Ran is a small signaling GTPase that is involved in nucleocytoplasmic
transport. Two additional functions of animal Ran in the formation of spindle
asters and the reassembly of the nuclear envelope in mitotic cells have been
recently reported. In contrast to Ras or Rho, Ran is not associated with
membranes. Instead, the spatial sequestering of its accessory proteins, the Ran
GTPase-activating protein RanGAP and the nucleotide exchange factor RCC1,
appears to define the local concentration of RanGTP vs. RanGDP involved in
signaling. Mammalian RanGAP is bound to the nuclear pore by a mechanism
involving the attachment of small ubiquitin-related modifier protein (SUMO)
to its C terminus and the subsequent binding of the SUMOylated domain to the
nucleoporin Nup358