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Gene Review:

fixO - cbb3-type cytochrome c oxidase subunit II

Bradyrhizobium diazoefficiens USDA 110

Gray, K.A. et al., Starkenburg, S.R. et al., Preisig, O. et al.

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Disease relevance of fixO

Partial amino acid sequences obtained from each of the subunits reveal significant homology to the fixN, fixO, and fixP gene products of Bradyrhizobium japonicum and Rhizobium meliloti [1].

High impact information on fixO

The isolation and analysis of membrane proteins from B. japonicum wild-type and mutant cells revealed two c-type cytochromes of 28 and 32 kDa as the likely products of the fixO and fixP genes and showed that both were synthesized only under oxygen-limited growth conditions [2].
Two gene copies of the nitrite oxidoreductase, type I ribulose-1,5-bisphosphate carboxylase/oxygenase, cytochrome c oxidase, and gene homologs encoding an aerobic-type carbon monoxide dehydrogenase were present [3].

References

Rhodobacter capsulatus contains a novel cb-type cytochrome c oxidase without a CuA center. Gray, K.A., Grooms, M., Myllykallio, H., Moomaw, C., Slaughter, C., Daldal, F. Biochemistry (1994) [Pubmed]
Genes for a microaerobically induced oxidase complex in Bradyrhizobium japonicum are essential for a nitrogen-fixing endosymbiosis. Preisig, O., Anthamatten, D., Hennecke, H. Proc. Natl. Acad. Sci. U.S.A. (1993) [Pubmed]
Genome sequence of the chemolithoautotrophic nitrite-oxidizing bacterium Nitrobacter winogradskyi Nb-255. Starkenburg, S.R., Chain, P.S., Sayavedra-Soto, L.A., Hauser, L., Land, M.L., Larimer, F.W., Malfatti, S.A., Klotz, M.G., Bottomley, P.J., Arp, D.J., Hickey, W.J. Appl. Environ. Microbiol. (2006) [Pubmed]

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