Effects of growth substrate and respiratory chain composition on bioenergetics in Acinetobacter sp. strain HO1-N.
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.
D000150:Acinetobacter / Q000378:metabolism*; D000255:Adenosine Triphosphate / Q000096:biosynthesis*; D002248:Carbon Monoxide / Q000494:pharmacology; D003573:Cytochrome b Group; D017937:Cytochrome d Group; D003580:Cytochromes / Q000378:metabolism*; D004579:Electron Transport; D004734:Energy Metabolism; D029968:Escherichia coli Proteins; D006859:Hydrogen / Q000378:metabolism; D010085:Oxidative Phosphorylation; D010101:Oxygen Consumption
D003573:Cytochrome b Group; D003580:Cytochromes; D029968:Escherichia coli Proteins; D002248:Carbon Monoxide; D006859:Hydrogen; D000255:Adenosine Triphosphate; D017937:Cytochrome d Group; C017168:cytochrome bo, E coli