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WeeksellaRANK: GenusTAXONOMY: Bacteria -> Bacteroidetes/Chlorobi group -> Bacteroidetes -> Flavobacteriia -> Flavobacteriales -> Flavobacteriaceae -> Weeksella OVERVIEW: Rods with parallel sides and rounded ends, typically 0.6 µm wide and 2–3 µm long. Intracellular granules of poly-β-hydroxybutyrate are absent. Endospores are not formed. Gram-stain-negative. Nonmotile. Do not glide or spread. Aerobic, having a strictly respiratory type of metabolism. Grow at temperatures from 18 to 42°C. Growth on solid media is not pigmented. Catalase- and oxidase-positive. Urease-negative. Growth occurs on MacConkey agar and β-hydroxybutyrate agar. Casein is digested. Agar is not digested. Chemo-organotrophic. Nonsaccharolytic. Indole is produced. Not found in the general environment, but seem to be parasites, saprophytes, or commensals of the internal surfaces of man and other warm-blooded animals. DNA G+C content (mol%): 35–38 (Tm). Type species: Weeksella virosa |