1997
DOI: 10.1046/j.1365-2958.1997.2781648.x
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HoxA is a transcriptional regulator for expression of the hup structural genes in free‐living Bradyrhizobium japonicum

Abstract: SummaryA chromosomally integrated Bradyrhizobium japonicum hoxA mutant is unable to oxidize hydrogen in free-living conditions. Derepressing conditions that induce hydrogenase activity in free-living, wild-type B. japonicum cells cannot induce expression of the hydrogenase structural genes in the hoxA mutant. The DNA-binding capacity of HoxA at the hup promoter region was studied by means of gel retardation. Both heterotrophically growing cells and cells induced to express hydrogenase activity contain a protei… Show more

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Cited by 29 publications
(23 citation statements)
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“…A similar arrangement of genes is seen in Bradyrhizobium japonicum (4,41). R. palustris has homologues of a set of uptake hydrogenase regulatory genes that has been characterized in Rhodobacter capsulatus (10,11,13), Ralstonia eutropha (3,24,26,27), and B. japonicum (1,40). It has hupU (RPA0959) and hupV (RPA0960) genes predicted to encode a hydrogen sensor protein.…”
Section: Resultsmentioning
confidence: 90%
“…A similar arrangement of genes is seen in Bradyrhizobium japonicum (4,41). R. palustris has homologues of a set of uptake hydrogenase regulatory genes that has been characterized in Rhodobacter capsulatus (10,11,13), Ralstonia eutropha (3,24,26,27), and B. japonicum (1,40). It has hupU (RPA0959) and hupV (RPA0960) genes predicted to encode a hydrogen sensor protein.…”
Section: Resultsmentioning
confidence: 90%
“…The transduction pathway that responds specifically to H 2 has been studied in Bradyrhizobium japonicum (41)(42)(43) and, in more detail, in R. eutropha (3,23,26,27) and R. capsulatus (13,16,18,40). This pathway comprises the three proteins HupUV, HupT, and HupR in R. capsulatus.…”
Section: Discussionmentioning
confidence: 99%
“…The controlling promoters of genes encoding chimeric hydrogenases of hydrogenoxidizing bacteria have also been characterized (8,35,50). In most of the cases, sequence elements resembling a Ϫ24/Ϫ12 consensus sequence of 54 -dependent promoters are located just upstream of the transcription start (39).…”
Section: Discussionmentioning
confidence: 99%