Cytochromes a1

**Definition:** A subclass of heme a containing cytochromes have a reduced alpha-band absorption of 587-592 nm. They are primarily found in microorganisms.

**Tree numbers:** - D08.244.175.500 - D12.776.422.220.175.500

**Synonyms:** - Cytochrome a(1) - Cytochrome a-1 - Cytochrome a1