title: Identification of a gene for a chemoreceptor of the methyl-accepting type in the symbiotic plasmid of Rhizobium leguminosarum bv. viciae UPM791.
abstract: The 4 kb DNA region located immediately upstream of the Rhizobium leguminosarum bv. viciae UPM791 hydrogen structural genes was sequenced and found to encode a chemoreceptor of the methyl-accepting type, the first to be described in a rhizobial symbiotic plasmid. Two additional open reading frames were found. Their protein products showed sequence homology to dehydrogenases and isomerases involved in the metabolism of aromatic compounds. Mutant analysis showed that this region is not required for hydrogenase activity.
authors.affiliation: Laboratorio de Microbiología. Escuela Técnica Superior de Ingenieros Agrónomos, Universidad Politécnica de Madrid, Spain.
authors.forename: B
authors.initials: B
authors.lastname: Brito
authors.forename: J M
authors.initials: JM
authors.lastname: Palacios
authors.forename: T
authors.initials: T
authors.lastname: Ruiz-Argüeso
authors.forename: J
authors.initials: J
authors.lastname: Imperial
mesh_terms: D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000235:genetics; D001483:Base Sequence; D005798:Genes, Bacterial; D007535:Isomerases / Q000235:genetics; D008565:Membrane Proteins / Q000235:genetics*; D000072236:Methyl-Accepting Chemotaxis Proteins; D008969:Molecular Sequence Data; D016366:Open Reading Frames; D010088:Oxidoreductases / Q000235:genetics; D010957:Plasmids / Q000235:genetics*; D011956:Receptors, Cell Surface / Q000235:genetics*; D016961:Rhizobium leguminosarum / Q000235:genetics*; D017386:Sequence Homology, Amino Acid; D013559:Symbiosis / Q000235:genetics*
chemical_list: D001426:Bacterial Proteins; D008565:Membrane Proteins; D000072236:Methyl-Accepting Chemotaxis Proteins; D011956:Receptors, Cell Surface; C057635:Tsr protein, Bacteria; D010088:Oxidoreductases; D007535:Isomerases