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Cytochrome c from bovine heart

≥95% based on Mol. Wt. 12,327 basis, powder, suitable for mammalian cell culture

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CAS Number:
EC Number:
MDL number:

biological source

bovine heart

Quality Level


≥95% based on Mol. Wt. 12,327 basis



mol wt

12327 Da

storage condition

(Tightly closed Dry)


cell culture | mammalian: suitable


0.40-0.50% Iron (anhydrous)


water: 10 mg/mL, dark red-brown

UniProt accession no.

storage temp.


Gene Information

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General description

Research area: Apoptosis

Cytochrome c (Cyt C) is an essential mitochondrial protein located in the inner membrane of the mitochondria. It is encoded in the nucleus as apo-cytochrome C. Cyt C occurs as membrane-bound or as soluble metalloproteins in energy-transducing membranes and is found in bacteria, archaea, and plastids. It belongs to the group of class IIa cytochromes and contains pentacoordinate heme centres.


Cytochrome C from bovine heart has been used:

  • as a component of the assay solution for testing the activity of respiratory chain complexes III and IV in the mitochondria of human osteosarcoma and human hepatocarcinoma cell lines
  • to determine the cytochrome c oxidase activity in mitochondria of human aortic endothelial cells
  • as a component of the cyt C oxidase reaction solution during in situ enzyme staining of cyt C oxidase in mice kidney tissues

Biochem/physiol Actions

Cytochrome C (Cyt C) is involved in the activation of caspase during the caspase-dependent apoptosis intrinsic pathway that triggers programmed cell death through apoptosis. It shows lipid-binding activity through its interaction with cardiolipin that accounts for the peroxidase activity of Cyt C. Cyt C binds to heme via the help of cytochrome c heme lyase that enables its release into the mitochondrial intermembrane space.
The ready interconversion of cytochrome c between ferrous and ferric states makes it an efficient biological electron carrier. It plays a vital role in cellular oxidations in both plants and animals. Generally regarded as a universal link in the respiratory chain, it forms the essential electron-bridge between the respirable substrates and oxygen.

Preparation Note

Prepared with acetic acid without using TCA.

Other Notes

Storage Class

11 - Combustible Solids




Not applicable


Not applicable


Eyeshields, Gloves, type N95 (US)

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Increasing cGMP-dependent protein kinase I activity attenuates cisplatin-induced kidney injury through protection of mitochondria function
Hasiyeti M, et al.
American Journal of Physiology: Renal Physiology (2013)
Stéphane T Gabilly et al.
Frontiers in plant science, 8, 1313-1313 (2017-08-12)
Cytochromes c are hemoproteins, with the prosthetic group covalently linked to the apoprotein, which function as electron carriers. A class of cytochromes c is defined by a CXXCH heme-binding motif where the cysteines form thioether bonds with the vinyl groups
C Garrido et al.
Cell death and differentiation, 13(9), 1423-1433 (2006-05-06)
In healthy cells, cytochrome c (Cyt c) is located in the mitochondrial intermembrane/intercristae spaces, where it functions as an electron shuttle in the respiratory chain and interacts with cardiolipin (CL). Several proapoptotic stimuli induce the permeabilization of the outer membrane
Michael A Hough et al.
Advances in microbial physiology, 67, 1-84 (2015-12-01)
Cytochromes c' are a group of class IIa cytochromes with pentacoordinate haem centres and are found in photosynthetic, denitrifying and methanotrophic bacteria. Their function remains unclear, although roles in nitric oxide (NO) trafficking during denitrification or in cellular defence against
Yong-Ling P Ow et al.
Nature reviews. Molecular cell biology, 9(7), 532-542 (2008-06-24)
Cytochrome c is primarily known for its function in the mitochondria as a key participant in the life-supporting function of ATP synthesis. However, when a cell receives an apoptotic stimulus, cytochrome c is released into the cytosol and triggers programmed


Enzymatic Assay of Ferredoxin NADP Reductase - To standardize a procedure for the enzymatic assay of Ferredoxin NADP Reductase (EC.1.18.12).


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