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Table 2. Differential characteristics of Bacteroides species [5767].

From: Genome sequence and description of Bacteroides timonensis sp. nov.

Properties B. timonensis B. cellulosyticus B. intestinalis B. fragilis B. vulgatus B. thetaiotaomicron B. salanitronis B. helcogenes B. finegoldii B. uniformis
Cell diameter (µm) 0.88 2–5 1–3 1.3 0.5–0.8 0.7–2 2–3 1–2 1–2 0.5–2
Oxygen requirement anaerobic anaerobic anaerobic anaerobic anaerobic anaerobic anaerobic anaerobic anaerobic anaerobic
Gram stain +
Salt requirement + + + + na na na na + +
Motility
Endospore formation + na
Indole + + + + +
Production of           
Alkaline phosphatase + + + Na + + + na + na
Catalase + + + na + na
Oxidase + na + na na na na na na
Nitrate reductase + na na +
Urease na na na na na
β-galactosidase + + na + + + + +
N-acetyl-glucosamine + + + na na + na na + +
Acid from           
L-Arabinose w + + + +
Ribose + na + na na na na
Mannose + + + + + + + + +
Mannitol
Sucrose + + + + + + + + +
D-glucose + + + + + + + + +
D-fructose + + + + +   + na na
D-maltose + + + + + + + + +
D-lactose w + + + + + + + +
Habitat human gut human gut human gut human gut human gut human gut human gut pig gut human gut human gut
  1. Bacteroides timonensis strain AP1T, B. cellulosilyticus strain DSM 14838, B. intestinalis strain DSM 17393, B. fragilis strain YCH46, B. vulgatus strain ATCC 8482, B. thetaiotaomicron strain VPI-5482, B. salanitronis strain DSM 18170, B. helcogenes strain P 36–108, B. finegoldii strain DSM 17565 and B. uniformis strain ATCC 8492 na = data not available; w = weak, v = variable reaction