METHIONAQUINONE IS A DIRECT NATURAL ELECTRON-ACCEPTOR FOR THE MEMBRANE-BOUND HYDROGENASE IN HYDROGENOBACTER-THERMOPHILUS STRAIN-TK-6

被引：8

作者：

ISHII, M

OMORI, T

IGARASHI, Y

ADACHI, O

AMEYAMA, M

KODAMA, T

机构：

[1] UNIV TOKYO,DEPT AGR CHEM,1-1-1 YAYOI,BUNKYO KU,TOKYO 113,JAPAN

[2] YAMAGUCHI UNIV,DEPT AGR CHEM,YAMAGUCHI 753,JAPAN

[3] KANSAI UNIV,FAC ENGN,SUITA,OSAKA 564,JAPAN

来源：

AGRICULTURAL AND BIOLOGICAL CHEMISTRY | 1991年 / 55卷 / 12期

关键词：

D O I：

10.1080/00021369.1991.10857919

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The hydrogenase reaction in Hydrogenobacter thermophilus strain TK-6, an obligately autotrophic, thermophilic, aerobic hydrogen-oxidizing bacterium, was studied in the membrane fraction, methionaquinone-depleted membrane, and purified membrane-bound hydrogenase. Both b and c type cytochromes were involved in the hydrogen oxidation. Methionaquinone mediated an electron transport between membrane-bound hydrogenase and cytochrome b560. Methionaquinone was reduced directly by purified hydrogenase. From these results, we conclude that methionaquinone is a direct natural electron acceptor for the membrane-bound hydrogenase in the strain.

引用

页码：3011 / 3016

页数：6

共 27 条

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