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REACTIVITY SENSITIVITY MW (kDa) Isotype
17 Rabbit 

Product Usage Information

Storage: Supplied in 136 mM NaCl, 2.6 mM KCI, 12 mM sodium phosphate (pH 7.4) dibasic, 2 mg/ml BSA, and 50% glycerol. Store at –20°C. Do not aliquot the antibodies.

Specificity / Sensitivity

COX IV (3E11) Rabbit mAb (Biotinylated) detects endogenous levels of total COX IV protein.


Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Lys29 of human COX IV protein.

Product Description

This Cell Signaling Technology antibody is conjugated to biotin under optimal conditions. The biotinylated antibody is expected to exhibit the same species cross-reactivity as the unconjugated COX IV (3E11) Rabbit mAb #4850.


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.


Entrez-Gene Id 1327
Swiss-Prot Acc. P13073


For Research Use Only. Not For Use In Diagnostic Procedures.
Cell Signaling Technology® is a trademark of Cell Signaling Technology, Inc.
U.S. Patent No. 5,675,063.