Cytochrome c is an electron transfer protein having one or several haem c groups bound to the protein by one or two thioether bonds involving sulphydryl groups of cysteine residues. The fifth haem iron ligand is always provided by a histidine residue. Cytochrome c possesses a wide range of properties and functions in a large number of different redox processes.
Family-defining Pfam domains (at least one of these domains is present in each family member):
|Pfam domain||Pfam clan|
|PF00034||Cytochrome c||CL0318||Cytochrome c superfamily|
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