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Azorhizobium caulinodans uses both cytochrome bd (quinol) and cytochrome cbb3 (cytochrome c) terminal oxidases for symbiotic N2 fixation.

Journal of bacteriology - 1 Oct 1996

Kaminski P A, Kitts C L, Zimmerman Z, Ludwig R A

Abstract excerpt

Azorhizobium caulinodans employs both cytochrome bd (cytbd; quinol oxidase) and cytcbb3 (cytc oxidase) as terminal oxidases in environments with very low O2 concentrations. To investigate physiological roles of these two terminal oxidases both in microaerobic culture and in symbiosis, knockout mutants were constructed. As evidenced by visible absorbance spectra taken from mutant bacteria carrying perfect gene...

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Identifiers

PMID: 8830696
DOI: 10.1128/jb.178.20.5989-5994.1996
PMCID: PMC178456

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

Related research

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Azorhizobium caulinodans uses both cytochrome bd (quinol) and cytochrome cbb3 (cytochrome c) terminal oxidases for symbiotic N2 fixation.PMID 8830696Read ↗

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A quinol oxidase, encoded by cyoABCD, is utilized to adapt to lower O2 concentrations in Rhizobium etli CFN42.Semantic proximity Read ↗

Azorhizobium caulinodans electron-transferring flavoprotein N electrochemically couples pyruvate dehydrogenase complex activity to N2 fixation.Semantic proximity Read ↗

Bradyrhizobium japonicum cytochrome c550 is required for nitrate respiration but not for symbiotic nitrogen fixation.Semantic proximity Read ↗

Novel reiterated Fnr-type proteins control the production of the symbiotic terminal oxidase cbb3 in Rhizobium etli CFN42.Semantic proximity Read ↗

The ccoNOQP gene cluster codes for a cb-type cytochrome oxidase that functions in aerobic respiration of Rhodobacter capsulatus.Semantic proximity Read ↗

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The Bradyrhizobium japonicum fixGHIS genes are required for the formation of the high-affinity cbb3-type cytochrome oxidase.Semantic proximity Read ↗

Quinol oxidase encoded by cyoABCD in Rhizobium etli CFN42 is regulated by ActSR and is crucial for growth at low pH or low iron conditions.Semantic proximity Read ↗

Role of the fixGHI region of Azorhizobium caulinodans in free-living and symbiotic nitrogen fixation.Semantic proximity Read ↗

Azorhizobium caulinodans pyruvate dehydrogenase activity is dispensable for aerobic but required for microaerobic growth.Semantic proximity Read ↗

Adaptation to oxygen: role of terminal oxidases in photosynthesis initiation in the purple photosynthetic bacterium, Rubrivivax gelatinosus.Semantic proximity Read ↗

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