title: Cloning, sequencing and mutational analysis of the cytochrome c552 gene (cycB) from Bradyrhizobium japonicum strain 110.
abstract: We report the cloning and nucleotide sequence analysis of the cytochrome c552 gene (cycB) of Bradyrhizobium japonicum strain 110. The gene was identified with help of an oligonucleotide that was designed on the basis of the amino acid sequence determined for purified cytochrome c552 of B. japonicum strain CC705. The cycB gene product has an N-terminal 23-amino acid signal peptide that is missing in the mature cytochrome c552 protein. A B. japonicum cycB insertion mutant was constructed which had no observable phenotypic defects in denitrification and symbiotic nitrogen fixation. Thus, the function of c552 remains unknown.
authors.affiliation: Mikrobiologisches Institut, Eidgenössische Technische Hochschule, Zürich, Switzerland.
authors.forename: S
authors.initials: S
authors.lastname: Rossbach
authors.forename: H
authors.initials: H
authors.lastname: Loferer
authors.forename: G
authors.initials: G
authors.lastname: Acuña
authors.forename: C A
authors.initials: CA
authors.lastname: Appleby
authors.forename: H
authors.initials: H
authors.lastname: Hennecke
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D003001:Cloning, Molecular; D003574:Cytochrome c Group / Q000235:genetics*; D004269:DNA, Bacterial / Q000235:genetics / Q000302:isolation & purification; D004926:Escherichia coli / Q000235:genetics; D005798:Genes, Bacterial; D008969:Molecular Sequence Data; D015345:Oligonucleotide Probes; D010641:Phenotype; D010957:Plasmids; D015183:Restriction Mapping; D012230:Rhizobiaceae / Q000235:genetics* / Q000378:metabolism; D012689:Sequence Homology, Nucleic Acid
chemical_list: D003574:Cytochrome c Group; D004269:DNA, Bacterial; D015345:Oligonucleotide Probes; C083951:cytochrome c553; C022302:cytochrome C-552