A subclass of heme a containing cytochromes that have two imidazole nitrogens as axial ligands and an alpha-band absorption of 605 nm. They are found in a variety of microorganisms and in eucaryotes as a low-spin cytochrome component of MITOCHONDRIAL ELECTRON TRANSPORT COMPLEX IV.
Entry Term(s)
Cytochrome a
Registry Numbers
9035-34-1
Previous Indexing
Cytochrome a Group (1994-2003)
Cytochromes (1979-1993)
Public MeSH Note
2004; see CYTOCROME A GROUP 1994-2004; CYTOCHROME A was indexed under CYTOCHROMES 1979-1993
History Note
2004; use CYTOCHROME A GROUP 1994-2004, use CYTOCHROME A (NM) 1979-1993
A subclass of heme a containing cytochromes that have two imidazole nitrogens as axial ligands and an alpha-band absorption of 605 nm. They are found in a variety of microorganisms and in eucaryotes as a low-spin cytochrome component of MITOCHONDRIAL ELECTRON TRANSPORT COMPLEX IV.
