Term: cytochromes
https://doi.org/10.1351/goldbook.C01510

Definition:
Conjugated proteins containing haem as the prosthetic group and associated with electron transport and with redox processes. The terminal electron transport chain of oxidative respiration contains at least five different cytochromes.

Related Terms:
1) proteins (http://doi.org/10.1351/goldbook.P04898).
2) haem (http://doi.org/10.1351/goldbook.H02714).
3) prosthetic group (http://doi.org/10.1351/goldbook.P04893).

Source: PAC, 1992, 64, 143. 'Glossary for chemists of terms used in biotechnology (IUPAC Recommendations 1992)' on page 151 (https://doi.org/10.1351/pac199264010143)

Citation: 'cytochromes' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.C01510

License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms.

Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.