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Genome sequence of Fibrella aestuarina BUZ 2(T), a filamentous marine bacterium.

ABSTRACT: Fibrella aestuarina BUZ 2(T) is the type strain of the recently characterized genus Fibrella. Here we report the draft genome sequence of this strain, which consists of a single scaffold representing the chromosome (with 11 gaps) and a 161-kb circular plasmid.

SUBMITTER: Filippini M

PROVIDER: S-EPMC3434725 | biostudies-literature | 2012 Jul

REPOSITORIES: biostudies-literature

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Genome sequence of Fibrella aestuarina BUZ 2(T), a filamentous marine bacterium.

Filippini Manuela M Qi Weihong W Blom Jochen J Goesmann Alexander A Smits Theo H M TH Bagheri Homayoun C HC

Journal of bacteriology 20120701 13

Fibrella aestuarina BUZ 2(T) is the type strain of the recently characterized genus Fibrella. Here we report the draft genome sequence of this strain, which consists of a single scaffold representing the chromosome (with 11 gaps) and a 161-kb circular plasmid. ...[more]

PMID: 22689241

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Project description:BACKGROUND: Chloroflexus aurantiacus is a thermophilic filamentous anoxygenic phototrophic (FAP) bacterium, and can grow phototrophically under anaerobic conditions or chemotrophically under aerobic and dark conditions. According to 16S rRNA analysis, Chloroflexi species are the earliest branching bacteria capable of photosynthesis, and Cfl. aurantiacus has been long regarded as a key organism to resolve the obscurity of the origin and early evolution of photosynthesis. Cfl. aurantiacus contains a chimeric photosystem that comprises some characters of green sulfur bacteria and purple photosynthetic bacteria, and also has some unique electron transport proteins compared to other photosynthetic bacteria. METHODS: The complete genomic sequence of Cfl. aurantiacus has been determined, analyzed and compared to the genomes of other photosynthetic bacteria. RESULTS: Abundant genomic evidence suggests that there have been numerous gene adaptations/replacements in Cfl. aurantiacus to facilitate life under both anaerobic and aerobic conditions, including duplicate genes and gene clusters for the alternative complex III (ACIII), auracyanin and NADH:quinone oxidoreductase; and several aerobic/anaerobic enzyme pairs in central carbon metabolism and tetrapyrroles and nucleic acids biosynthesis. Overall, genomic information is consistent with a high tolerance for oxygen that has been reported in the growth of Cfl. aurantiacus. Genes for the chimeric photosystem, photosynthetic electron transport chain, the 3-hydroxypropionate autotrophic carbon fixation cycle, CO2-anaplerotic pathways, glyoxylate cycle, and sulfur reduction pathway are present. The central carbon metabolism and sulfur assimilation pathways in Cfl. aurantiacus are discussed. Some features of the Cfl. aurantiacus genome are compared with those of the Roseiflexus castenholzii genome. Roseiflexus castenholzii is a recently characterized FAP bacterium and phylogenetically closely related to Cfl. aurantiacus. According to previous reports and the genomic information, perspectives of Cfl. aurantiacus in the evolution of photosynthesis are also discussed. CONCLUSIONS: The genomic analyses presented in this report, along with previous physiological, ecological and biochemical studies, indicate that the anoxygenic phototroph Cfl. aurantiacus has many interesting and certain unique features in its metabolic pathways. The complete genome may also shed light on possible evolutionary connections of photosynthesis.

Dataset Information

Genome sequence of Fibrella aestuarina BUZ 2(T), a filamentous marine bacterium.

Publications

Genome sequence of Fibrella aestuarina BUZ 2(T), a filamentous marine bacterium.

Similar Datasets

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