title: The primary structure of cytochrome c-554 from the green photosynthetic bacterium Chloroflexus aurantiacus.
abstract: The complete nucleotide sequence of the cytochrome c-554 gene from the green photosynthetic bacterium Chloroflexus aurantiacus has been determined. The derived amino acid sequence showed that the cytochrome precursor protein consists of 414 residues and contains 4-Cys-X-X-Cys-His- heme binding motifs. The only regions of the cytochrome c-554 sequence that were found to be significantly similar to the sequences of cytochromes from other organisms were the heme binding sites. The highest similarity was found with the heme binding segments in the four-heme reaction center cytochrome subunit from the purple photosynthetic bacterium Rhodopseudomonas viridis. The importance of this similarity for the evolutionary relationship between Chloroflexus and the purple bacteria is discussed.
authors.affiliation: Department of Chemistry and Biochemistry, Arizona State University, Tempe 85287-1604.
authors.forename: S
authors.initials: S
authors.lastname: Dracheva
authors.forename: J C
authors.initials: JC
authors.lastname: Williams
authors.forename: G
authors.initials: G
authors.lastname: Van Driessche
authors.forename: J J
authors.initials: JJ
authors.lastname: Van Beeumen
authors.forename: R E
authors.initials: RE
authors.lastname: Blankenship
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D001665:Binding Sites; D015139:Blotting, Southern; D000460:Chlorophyta / Q000737:chemistry*; D003001:Cloning, Molecular; D003062:Codon; D003574:Cytochrome c Group / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism; D004247:DNA / Q000737:chemistry / Q000235:genetics; D006418:Heme / Q000378:metabolism; D008969:Molecular Sequence Data; D008970:Molecular Weight; D016133:Polymerase Chain Reaction; D015183:Restriction Mapping
chemical_list: D003062:Codon; D003574:Cytochrome c Group; C083951:cytochrome c553; D006418:Heme; D004247:DNA; C022302:cytochrome C-552