cytochromes

https://doi.org/10.1351/goldbook.C01510
Conjugated @P04898@ containing @H02714@ as the @P04893@ and associated with electron transport and with redox processes. The terminal electron transport chain of oxidative respiration contains at least five different cytochromes.
Source:
PAC, 1992, 64, 143. (Glossary for chemists of terms used in biotechnology (IUPAC Recommendations 1992)) on page 151 [Terms] [Paper]