title: Nucleotide sequence of the second psbG gene in Synechocystis 6803. Possible implications for psbG function as a NAD(P)H dehydrogenase subunit gene.
abstract: Nucleotide sequencing of the second Synechocystis 6803 psbG gene, psbG2 shows the predicted polypeptide to be 219 amino acids long. It is less similar to chloroplast psbG genes than is the Synechocystis psbG1 copy. Alignment with seven other psbG protein sequences, including that from the Paramecium mitochondrial genome reveals a central highly conserved region common to each. This is discussed as evidence supporting the proposal that the psbG polypeptide is a NAD(P)H dehydrogenase (complex I) subunit in cyanobacteria, chloroplasts and mitochondria.
authors.affiliation: Department of Biochemistry, Imperial College of Science, Technology and Medicine, London, UK.
authors.forename: S R
authors.initials: SR
authors.lastname: Mayes
authors.forename: K M
authors.initials: KM
authors.lastname: Cook
authors.forename: J
authors.initials: J
authors.lastname: Barber
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002736:Chloroplasts / Q000201:enzymology; D000458:Cyanobacteria / Q000235:genetics*; D003579:Cytochrome Reductases / Q000235:genetics*; D004579:Electron Transport; D008928:Mitochondria / Q000201:enzymology; D008969:Molecular Sequence Data; D009245:NADH Dehydrogenase / Q000235:genetics*; D010247:Paramecium / Q000235:genetics; D010788:Photosynthesis
chemical_list: D003579:Cytochrome Reductases; D009245:NADH Dehydrogenase