Cytochromes and hydrogen-oxidizing activity in the thermophilic hydrogen-oxidizing bacteria related to the genus Hydrogenobacter.
In: Archives of Microbiology, Jg. 156 (1991-11-01), Heft 6, S. 497-500
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Zugriff:
The highly thermophilic, hydrogen-oxidizing aerobic bacteria related to Hydrogenobacter possess a respiratory chain comprising a quinone and b-type (alpha band at 556 nm and 562 nm) and c-type (alpha band at 552 nm) cytochromes. They have no aa-type cytochromes and their terminal oxidase is an o-type cytochrome. A polarographic method with an oxygen electrode was used for the measurement of the hydrogen-oxidizing activity. This activity was strongly inhibited by HQNO (2-N-heptyl-4-hydroxyquinoline N-oxide), an inhibitor of the respiratory chain in the quinone-cytochrome b region, and by KCN, an inhibitor of the terminal cytochrome oxidase. This study shows that the electrons released from hydrogen oxidation by the membrane-bound hydrogenase probably enter the respiratory chain at the level of the quinone-cytochrome b region. [ABSTRACT FROM AUTHOR]
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Titel: |
Cytochromes and hydrogen-oxidizing activity in the thermophilic hydrogen-oxidizing bacteria related to the genus Hydrogenobacter.
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Autor/in / Beteiligte Person: | Beffa, Trello ; Berczy, Margaret ; Aragno, Michel |
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Zeitschrift: | Archives of Microbiology, Jg. 156 (1991-11-01), Heft 6, S. 497-500 |
Veröffentlichung: | 1991 |
Medientyp: | academicJournal |
ISSN: | 0302-8933 (print) |
DOI: | 10.1007/BF00245398 |
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