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The oxidase test is used to determine whether an organism possesses the cytochrome c oxidase enzyme. The test is used as an aid for the differentiation of Neisseria, Moraxella, Campylobacter and Pasteurella species (oxidase positive). It is also used to differentiate pseudomonads from related species. [1]
Inoculating the fluid from infected joints directly into blood culture vials can enhance the chances of an accurate culture, but extended culture times are not helpful. [2] The organism has also been known as Moraxella kingae. Kingella kingae is oxidase-positive, catalase-negative, and beta-hemolytic.
Moraxella is a genus of gram-negative bacteria in the family Moraxellaceae.It is named after the Swiss ophthalmologist Victor Morax.The organisms are short rods, coccobacilli, or as in the case of Moraxella catarrhalis, diplococci in morphology, with asaccharolytic, oxidase-positive, and catalase-positive properties. [2]
Pasteurella is a genus of Gram-negative, facultatively anaerobic bacteria. [1] [2] Pasteurella species are nonmotile and pleomorphic, and often exhibit bipolar staining ("safety pin" appearance). Most species are catalase- and oxidase-positive. [3]
E. meningoseptica is positive by the catalase test, the oxidase test, and the indole test. It is negative by the urease test. In general, it is negative by the nitrate reductase test, although some strains are positive. [6] E. meningoseptica grows well on blood agar and chocolate agar. Colonies are very pale yellow and may not be easily evident ...
P. faecalis is an aerobic bacterium formed of Gram negative rods, measuring 0.8-1.2 x 1.0-2.0 μm, which grow in circular, opaque colonies on nutrient agar. It is oxidase-positive, catalase-positive and indole-negative.
They are oxidase-positive, catalase-negative, urease-negative, and indole-negative, and reduce nitrate to nitrite. [ citation needed ] In 2006, Azakami et al reported that the periodontal pathogen E. corrodens has an ortholog of luxS , the gene required for quorum sensing (QS) signal molecule AI-2 synthesis and that E. corrodens can produce AI ...
Plesiomonas shigelloides is a species of bacteria [1] and the only member of its genus. It is a Gram-negative, rod-shaped bacterium which has been isolated from freshwater, freshwater fish, shellfish, cattle, goats, swine, cats, dogs, monkeys, vultures, snakes, toads and humans. [2] It is considered a fecal coliform.