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一氧化碳作为硫酸盐生物还原的电子供体。

Carbon monoxide as an electron donor for the biological reduction of sulphate.

作者信息

Parshina Sofiya N, Sipma Jan, Henstra Anne Meint, Stams Alfons J M

机构信息

Laboratory of Microbiology of Anthropogenic Environments, Winogradsky Institute of Microbiology, Russian Academy of Sciences, 117312, prosp. 60 let Oktyabrya, 7, b.2, Moscow, Russia.

出版信息

Int J Microbiol. 2010;2010:319527. doi: 10.1155/2010/319527. Epub 2010 Jun 14.

Abstract

Several strains of Gram-negative and Gram-positive sulphate-reducing bacteria (SRB) are able to use carbon monoxide (CO) as a carbon source and electron donor for biological sulphate reduction. These strains exhibit variable resistance to CO toxicity. The most resistant SRB can grow and use CO as an electron donor at concentrations up to 100%, whereas others are already severely inhibited at CO concentrations as low as 1-2%. Here, the utilization, inhibition characteristics, and enzymology of CO metabolism as well as the current state of genomics of CO-oxidizing SRB are reviewed. Carboxydotrophic sulphate-reducing bacteria can be applied for biological sulphate reduction with synthesis gas (a mixture of hydrogen and carbon monoxide) as an electron donor.

摘要

几种革兰氏阴性和革兰氏阳性硫酸盐还原菌(SRB)能够利用一氧化碳(CO)作为碳源和电子供体进行生物硫酸盐还原。这些菌株对CO毒性表现出不同程度的抗性。抗性最强的SRB能够在高达100%的CO浓度下生长并将其用作电子供体,而其他菌株在低至1-2%的CO浓度下就会受到严重抑制。本文综述了CO代谢的利用、抑制特性、酶学以及CO氧化SRB的基因组学现状。羧基营养型硫酸盐还原菌可用于以合成气(氢气和一氧化碳的混合物)作为电子供体的生物硫酸盐还原。

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