Query: NC_019968:1084288 Prevotella dentalis DSM 3688 chromosome 2, complete sequence Lineage: Prevotella dentalis; Prevotella; Prevotellaceae; Bacteroidales; Bacteroidetes; Bacteria General Information: Environment: Host, Human oral microflora; Isolation: Human dental root canal; Temp: Mesophile; Temp: 37C. This organism is an member of the human oral microbial community that has been isolated in association with infections of the dental root canal.
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General Information: This organism is associated with severe and chronic periodontal (tissues surrounding and supporting the tooth) diseases. Progression of the disease is caused by colonization by this organism in an anaerobic environment in host tissues and severe progression results in loss of the tissues supporting the tooth and eventually loss of the tooth itself. The black pigmentation characteristic of this bacterium comes from iron acquisition that does not use the typical siderophore system of other bacteria but accumulates hemin. Peptides appear to be the predominant carbon and energy source of this organism, perhaps in keeping with its ability to destroy host tissue. Oxygen tolerance systems play a part in establishment of the organism in the oral cavity, including a superoxide dismutase. Pathogenic factors include extracellular adhesins that mediate interactions with other bacteria as well as the extracellular matrix, and a host of degradative enzymes that are responsible for tissue degradation and spread of the organism including the gingipains, which are trypsin-like cysteine proteases.