Identification of cytochromes o and a 3 as functional terminal oxidases in the thermophilic bacterium, PS3

FEBS Letters

Scott, Robert I.¹  Lloyd, David¹  Baines, Baldev S.²  Poole, Robert K.²  Salmon, Ian² 

[1] Department of Microbiology, University College, Newport Road, Cardiff DF2 1TA, Wales England;Department of Microbiology, Queen Elizabeth College (University of London), Campden Hill, London W8 7AH, England

关键词: Cytochrome oxidases;    Bacterial respiration;    Cytochrome o;    Cytochrome aa 3;   

DOI  :  10.1016/0014-5793(82)80752-7

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Low-temperature photodissociation spectra of membranes from the thermophile PS3 reveal cytochromes o and a ₃. The latter reacts with O₂ at −103°C to give a light-insensitive compound(s), but the initial stages of O₂ binding to cytochrome o could not be studied under these conditions. Photochemical action spectra identify cytochromes a ₃ and o, but not a CO-binding c-type cytochrome, as functional terminal oxidases in this bacterium.

【 授权许可】

Unknown