23-044-M

Sigma-Aldrich

VHL Protein Complex, Active, 10 µg

Active complex of five (5) recombinant human enzymes: VHL amino acids 54-end, full length Elongin C, full length Elongin B, full length Cul2, & full length Rbx1. For use in Enzyme Assays. Functions as an E3 ligase in ubiquitination assays.

Synonym(s):
VCB-Cul2 complex, ECV complex, CBC VHL
eCl@ss:
32160405
NACRES:
NA.41
Pricing and availability is not currently available.

Quality Level

biological source

human

mfr. no.

Upstate®

application(s)

activity assay: suitable

Gene Information

human ... Cul2(8453), Rbx1(9978), VHL(7428)

General description

The VHL complex is a multi-subunit ubiquitin ligase composed of VHL, Elongin B, Elongin C, Cul2 and Rbx1. The VHL protein serves as the substrate recognition component and is linked by Elongin C to a heterodimeric Cul2/Rbx1 module that functions as a potent activator of the ubiquitination of target proteins by an E2 conjugating enzyme. Elongin B interacts with the complex through Elongin C and appears to stabilize the binding of Elongin C to VHL. The primary function of the VHL complex is to regulate HIF (hypoxia inducible factor) activity by targeting the hydroxylated HIF-1α subunit for ubiquitination and rapid proteasomal degradation under normoxic conditions. It therefore plays an important role in the regulation of hypoxia-inducible genes such as the vascular endothelial growth factor (VEGF) and glucose transport-1 (Glut-1). Mutations in VHL are associated with the inherited von Hippel-Lindau (VHL) cancer syndrome and numerous forms of renal cell carcinoma.

Application

Ubiquitination Cascade Comoponent: E3

Physical form

Purified using glutathione sepharose.

Other Notes

For Specific Activity data, refer to the Certificate of Analysis for individual lots of this enzyme.

Legal Information

UPSTATE is a registered trademark of Merck KGaA, Darmstadt, Germany

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