The heme-copper oxidase family consists of three distinct types of terminal oxidases and is related to nitric oxide reductase
Open Access
- 1 August 1994
- journal article
- Published by Oxford University Press (OUP) in FEMS Microbiology Letters
- Vol. 121 (1), 1-9
- https://doi.org/10.1111/j.1574-6968.1994.tb07067.x
Abstract
Among aerobic prokaryotes, many different terminal oxidase complexes have been described. Sequence comparison has revealed that the aa3-type cytochrome c oxidase and the bo3-type quinol oxidase are variations on the same theme: the heme-copper oxidase. A third member of this family has recently been recognized: the cbb3-type cytochrome c oxidase. Here we give an overview, and report that nitric oxide (NO) reductase, a bc-type cytochrome involved in denitrification, shares important features with these terminal oxidases as well. Tentative structural, functional and evolutionary implications are discussed.Keywords
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