生长底物和呼吸链组成对不动杆菌属HO1-N菌株生物能量学的影响
Effects of growth substrate and respiratory chain composition on bioenergetics in Acinetobacter sp. strain HO1-N.
作者信息
Ensley B D, Irwin R M, Carreira L A, Hoffman P S, Morgan T V, Finnerty W R
出版信息
J Bacteriol. 1981 Nov;148(2):508-13. doi: 10.1128/jb.148.2.508-513.1981.
Abstract
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.
摘要
在不动杆菌属HO1-N菌株中研究了呼吸链组成与磷酸化与电子传递偶联效率之间的关系。仅含有细胞色素o作为末端氧化酶的细胞，其合成腺苷5'-三磷酸和质子外排的化学计量与同时含有细胞色素o和d作为末端氧化酶的细胞相同。此外，一氧化碳对细胞色素o或d的抑制作用及光解除作用均未改变能量偶联效率。这些发现表明，在不动杆菌中，腺苷5'-三磷酸的合成通过细胞色素o和d与电子传递偶联。
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