title: Phylogenetic analysis of a novel sulfate-reducing magnetic bacterium, RS-1, demonstrates its membership of the delta-Proteobacteria.
abstract: Most of the 16S ribosomal RNA gene of a sulfate-reducing magnetic bacterium, RS-1, was sequenced, and phylogenetic analysis was carried out. The results suggest that RS-1 is a member of the delta-Proteobacteria, and it appears to represent a new genus. RS-1 is the first bacterium reported outside the alpha-Proteobacteria that contains magnetite inclusions. RS-1 therefore disrupts the correlation between the alpha-Proteobacteria and possession of magnetite inclusions, and that between the delta-Proteobacteria and possession of greigite inclusions. The existence of RS-1 also suggests that intracellular magnetite biomineralization is of multiple evolutionary origins.
authors.affiliation: Center for Molecular Biology and Cytogenetics, SRL, Tokyo, Japan.
authors.forename: R
authors.initials: R
authors.lastname: Kawaguchi
authors.forename: J G
authors.initials: JG
authors.lastname: Burgess
authors.forename: T
authors.initials: T
authors.lastname: Sakaguchi
authors.forename: H
authors.initials: H
authors.lastname: Takeyama
authors.forename: R H
authors.initials: RH
authors.lastname: Thornhill
authors.forename: T
authors.initials: T
authors.lastname: Matsunaga
mesh_terms: D001419:Bacteria / Q000235:genetics; D001483:Base Sequence; D004269:DNA, Bacterial / Q000235:genetics*; D004275:DNA, Ribosomal / Q000235:genetics*; D052203:Ferrosoferric Oxide; D005798:Genes, Bacterial; D006089:Gram-Negative Anaerobic Bacteria / Q000145:classification* / Q000235:genetics / Q000378:metabolism; D007501:Iron / Q000378:metabolism*; D008969:Molecular Sequence Data; D010087:Oxides / Q000378:metabolism*; D010802:Phylogeny; D012329:RNA, Bacterial / Q000235:genetics*; D012336:RNA, Ribosomal, 16S / Q000235:genetics*; D016415:Sequence Alignment; D013045:Species Specificity; D013440:Sulfides / Q000378:metabolism*; D016999:Sulfur-Reducing Bacteria / Q000145:classification* / Q000235:genetics / Q000378:metabolism
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D010087:Oxides; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S; D013440:Sulfides; C111959:greigite; D007501:Iron; D052203:Ferrosoferric Oxide