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We show here that Rhizobium meliloti, the nitrogen-fixing endosymbiont of alfalfa (Medicago sativa), has a regulatory gene that is structurally homologous to previously characterized ntrC genes in(More)
A Crystallogral structure is described for the Mg2+-BeF3--bound receiver domain of Sinorhizobium meliloti DctD bearing amino acid substitution E121K. Differences between the apo- and ligand-bound(More)
The dctD gene product (DCTD) activates transcription from dctA by the sigma 54-holoenzyme form of RNA polymerase in Rhizobium meliloti. We have purified a constitutively active form of R. meliloti(More)