Cell Signaling Technology

Product Pathways - Protein Stability

RBX1 Antibody #4397

Applications Reactivity Sensitivity MW (kDa) Source
W H M R Mk Endogenous 13 Rabbit

Applications Key:  W=Western Blotting
Reactivity Key:  H=Human  M=Mouse  R=Rat  Mk=Monkey
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.

Protocols

Specificity / Sensitivity

RBX1 Antibody detects endogenous levels of total RBX1 protein.

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues near the amino terminus of human RBX1 protein. Antibodies were purified by protein A and peptide affinity chromatography.

Western Blotting

Western Blotting

Western blot analysis of extracts from HeLa, Hep G2, and HCT 116 cells using RBX1 Antibody.

Background

RING-box protein 1 (RBX1 or ROC1) is an essential component of two distinct but structurally related E3 ubiquitin ligase complexes, the SCF complex and the CBC (VHL) complex (1). RBX1 mediates the neddylation of CUL1, which activates SCF E3 ligase by facilitating the ubiquitin transfer from E2 to substrates (2-4). The RING finger domain of RBX1 is required for ubiquitin ligation (5). Two evolutionarily conserved mammalian RBX family members, RBX1/ROC1 and RBX2/ROC2/SAG, have been identified (5). RBX1 is constitutively expressed and binds to CUL2/VHL, while stress-inducible RBX2 binds to CUL5/SOCS (6).

  1. Zheng, N. et al. (2002) Nature 416, 703-9.
  2. Kamura, T. et al. (1999) Genes Dev 13, 2928-33.
  3. Morimoto, M. et al. (2003) Biochem Biophys Res Commun 301, 392-8.
  4. Pan, Z.Q. et al. (2004) Oncogene 23, 1985-97.
  5. Sun, Y. et al. (2001) Antioxid Redox Signal 3, 635-50.
  6. Gu, Q. et al. (2007) Cancer Res 67, 3616-25.

Application References

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For Research Use Only. Not For Use In Diagnostic Procedures.

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