Effects of growth substrate and respiratory chain composition on bioenergetics in Acinetobacter sp. strain HO1-N | Zendy

Burt D. Ensley | Zendy; R. M. Irwin | Zendy; L. A. Carreira | Zendy; Paul S. Hoffman | Zendy; Túlio Morgan | Zendy; W. R. Finnerty | Zendy

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Effects of growth substrate and respiratory chain composition on bioenergetics in Acinetobacter sp. strain HO1-N

Author(s) -

Burt D. Ensley,

R. M. Irwin,

L. A. Carreira,

Paul S. Hoffman,

Túlio Morgan,

W. R. Finnerty

Publication year - 1981

Publication title -

journal of bacteriology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.652

H-Index - 246

eISSN - 1067-8832

pISSN - 0021-9193

DOI - 10.1128/jb.148.2.508-513.1981

Subject(s) - biology , electron transport chain , adenosine triphosphate , cytochrome c oxidase , strain (injury) , cytochrome , biochemistry , chemiosmosis , respiratory chain , substrate (aquarium) , atp synthase , oxidase test , bioenergetics , adenosine , respiration , enzyme , mitochondrion , botany , ecology , anatomy

The relationship between respiratory chain composition and efficiency of coupling phosphorylation to electron transport was examined in Acinetobacter sp. strain HO1-N. Cells containing only cytochrome o as a terminal oxidase displayed the same stoichiometries of adenosine 5'-triphosphate synthesis and proton extrusion as cells which contained both cytochromes o and d as terminal oxidases. In addition, CO inhibition and photo-relief of cytochromes o or d did not alter the efficiency of energy coupling. These findings indicate that adenosine 5'-triphosphate synthesis is coupled to electron transport through both cytochromes o and d in Acinetobacter.

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