Identification and isolation of genes essential for H sub 2 oxidation in Rhodobacter capsulatus. [Hydrogenase]
- Univ. of Missouri-Columbia (USA)
Mutants of Rhodobacter capsulatus unable to grow photoautotrophically with H{sub 2} and CO{sub 2} were isolated. Those lacking uptake hydrogenase activity as measured by H{sub 2}-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.
- DOE Contract Number:
- FG02-87ER13713
- OSTI ID:
- 7195225
- Journal Information:
- Journal of Bacteriology; (USA), Vol. 171:2; ISSN 0021-9193
- Country of Publication:
- United States
- Language:
- English
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