|Other Names||E3 SUMO-protein ligase RanBP2, 632-, 358 kDa nucleoporin, Nuclear pore complex protein Nup358, Nucleoporin Nup358, Ran-binding protein 2, RanBP2, p270, RANBP2, NUP358|
|Target/Specificity||The synthetic peptide sequence used to generate the antibody AP1120b was selected from the C-term region of human RANBP2. A 10 to 100 fold molar excess to antibody is recommended. Precise conditions should be optimized for a particular assay.|
|Format||The synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder. Reconstitute with 0.1 ml deionized water for a final concentration of 1 mg/ml.|
|Storage||Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C.|
|Precautions||This product is for research use only. Not for use in diagnostic or therapeutic procedures.|
|Function||E3 SUMO-protein ligase which facilitates SUMO1 and SUMO2 conjugation by UBE2I. Involved in transport factor (Ran-GTP, karyopherin)-mediated protein import via the F-G repeat-containing domain which acts as a docking site for substrates. Binds single- stranded RNA (in vitro). May bind DNA. Component of the nuclear export pathway. Specific docking site for the nuclear export factor exportin-1. Sumoylates PML at 'Lys-490' which is essential for the proper assembly of PML-NB.|
|Cellular Location||Nucleus. Nucleus membrane. Nucleus, nuclear pore complex. Note=Detected in diffuse and discrete intranuclear foci. Cytoplasmic filaments|
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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.
Salina, D., et al., J. Cell Biol. 162(6):991-1001 (2003).Kirsh, O., et al., EMBO J. 21(11):2682-2691 (2002).Mavlyutov, T.A., et al., Traffic 3(9):630-640 (2002).Miyauchi, Y., et al., J. Biol. Chem. 277(51):50131-50136 (2002).Saitoh, H., et al., J. Biol. Chem. 277(7):4755-4763 (2002).
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