title: The Rhizobium meliloti host range nodQ gene encodes a protein which shares homology with translation elongation and initiation factors.
abstract: The Rhizobium meliloti nod region IIb is involved in host-range determination: (i) the presence of region IIb is necessary for transfer of alfalfa root hair curling ability to Rhizobium leguminosarum biovar trifolii; (ii) a mutation in region IIb extends the R. meliloti infection host range to Vicia sativa nigra; (iii) dominance of R. meliloti nod genes over R. leguminosarum biovar viciae nod genes is abolished by mutations in region IIb. The nucleotide sequence of this region has been determined. Genes corresponding to the two open reading frames identified are designated nodP and nodQ. The predicted amino acid sequence of the NodQ protein shows homology with translation initiation and elongation factors. The consensus sequence involved in the GTP-binding domain is conserved.
authors.affiliation: Laboratoire de Biologie Moléculaire des Relations Plantes-Microorganismes, Centre National de la Recherche Scientifique--Institut National de la Recherche Agronomique, Tolosan, France.
authors.forename: E
authors.initials: E
authors.lastname: Cervantes
authors.forename: S B
authors.initials: SB
authors.lastname: Sharma
authors.forename: F
authors.initials: F
authors.lastname: Maillet
authors.forename: J
authors.initials: J
authors.lastname: Vasse
authors.forename: G
authors.initials: G
authors.lastname: Truchet
authors.forename: C
authors.initials: C
authors.lastname: Rosenberg
mesh_terms: D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000235:genetics*; D001483:Base Sequence; D003227:Conjugation, Genetic; D004251:DNA Transposable Elements; D004269:DNA, Bacterial / Q000235:genetics; D005798:Genes, Bacterial; D005799:Genes, Dominant; D008969:Molecular Sequence Data; D009154:Mutation; D010445:Peptide Elongation Factors / Q000235:genetics*; D010448:Peptide Initiation Factors / Q000235:genetics*; D010957:Plasmids; D015183:Restriction Mapping; D012231:Rhizobium / Q000235:genetics*
chemical_list: D001426:Bacterial Proteins; D004251:DNA Transposable Elements; D004269:DNA, Bacterial; D010445:Peptide Elongation Factors; D010448:Peptide Initiation Factors