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. 1989 Feb;171(2):714–721. doi: 10.1128/jb.171.2.714-721.1989

Identification and isolation of genes essential for H2 oxidation in Rhodobacter capsulatus.

H W Xu 1, J Love 1, R Borghese 1, J D Wall 1
PMCID: PMC209656  PMID: 2536678

Abstract

Mutants of Rhodobacter capsulatus unable to grow photoautotrophically with H2 and CO2 were isolated. Those lacking uptake hydrogenase activity as measured by H2-dependent methylene blue reduction were analyzed genetically and used in complementation studies for the isolation of the wild-type genes. Results of further subcloning and transposon Tn5 mutagenesis suggest the involvement of a minimum of five genes. Hybridization to the 2.2-kilobase-pair SstI fragment that lies within the coding region for the large and small subunits of Bradyrhizobium japonicum uptake hydrogenase showed one region of strong homology among the R. capsulatus fragments isolated, which we interpret to mean that one or both structural genes were among the genes isolated.

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Selected References

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