Cell Signaling Technology

Product Pathways - Metabolism

Cox IV (4D11-B3-E8) Mouse mAb #11967

Applications Reactivity Sensitivity MW (kDa) Isotype
W IP IHC-P IF-IC H M R Mk Endogenous 17 Mouse IgG1

Applications Key:  W=Western Blotting  IP=Immunoprecipitation  IHC-P=Immunohistochemistry (Paraffin)  IF-IC=Immunofluorescence (Immunocytochemistry)
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

* Product-specific protocol.

Specificity / Sensitivity

Cox IV (4D11-B3-E8) Mouse mAb recognizes endogenous levels of total Cox IV protein.

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues near the carboxy terminus of human Cox IV protein.

Western Blotting

Western Blotting

Western blot analysis of extracts from various cell lines using Cox IV (4D11-B3-E8) Mouse mAb.

IP

IP

Immunoprecipitation of Cox IV from HeLa cell extracts, using a non-specific mouse IgG control antibody (lane 2) or Cox IV (4D11-B3-E8) Mouse mAb (lane 3). Lane 1 is 10% input. Western blot was performed using Cox IV (4D11-B3-E8) Mouse mAb.

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded human colon carcinoma using Cox IV (4D11-B3-E8) Mouse mAb.


IF-IC

IF-IC

Confocal immunofluorescent analysis of HeLa cells using Cox IV (4D11-B3-E8) Mouse mAb (green). Blue pseudocolor = DRAQ5® #4084 (fluorescent DNA dye).

Background

Cytochrome c oxidase (COX) is a hetero-oligomeric enzyme consisting of 13 subunits localized to the inner mitochondrial membrane (1-3). It is the terminal enzyme complex in the respiratory chain, catalyzing the reduction of molecular oxygen to water coupled to the translocation of protons across the mitochondrial inner membrane to drive ATP synthesis. The 3 largest subunits forming the catalytic core are encoded by mitochondrial DNA, while the other smaller subunits, including COX IV, are nuclear-encoded. Research studies have shown that deficiency in COX activity correlates with a number of human diseases (4). The COX IV antibody can be used effectively as a mitochondrial loading control in cell-based research assays.

  1. Ostermeier, C. et al. (1996) Curr. Opin. Struct. Biol. 6, 460-466.
  2. Capaldi, R.A. et al. (1983) Biochim. Biophys. Acta 726, 135-148.
  3. Kadenbach, B. et al. (2000) Free Radic. Biol. Med. 29, 211-221.
  4. Barrientos, A. et al. (2002) Gene 286, 53-63.

Application References

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Companion Products


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

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