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  2. Oxidase test - Wikipedia

    en.wikipedia.org/wiki/Oxidase_test

    If the area of inoculation turns dark-blue to maroon to almost black, then the result is positive. If a color change does not occur within three minutes, the result is negative. In alternative manner, live bacteria cultivated on trypticase soy agar plates may be prepared using sterile technique with a single-line streak inoculation. The ...

  3. Oxidoreductase - Wikipedia

    en.wikipedia.org/wiki/Oxidoreductase

    In biochemistry, an oxidoreductase is an enzyme that catalyzes the transfer of electrons from one molecule, the reductant, also called the electron donor, to another, the oxidant, also called the electron acceptor. This group of enzymes usually utilizes NADP+ or NAD+ as cofactors.

  4. Oxidase - Wikipedia

    en.wikipedia.org/wiki/Oxidase

    In reactions involving donation of a hydrogen atom, oxygen is reduced to water (H 2 O) or hydrogen peroxide (H 2 O 2). Some oxidation reactions, such as those involving monoamine oxidase or xanthine oxidase, typically do not involve free molecular oxygen. [1] [2] The oxidases are a subclass of the oxidoreductases. The use of dioxygen is the ...

  5. Flavin-containing monooxygenase - Wikipedia

    en.wikipedia.org/wiki/Flavin-containing_mono...

    The cofactor NADPH binds to the oxidized state of the FAD prosthetic group, reducing it to FADH 2. Molecular oxygen binds to the formed NADP +-FADH 2-enzyme complex and is reduced, resulting in 4a-hydroperoxyflavin (4a-HPF or FADH-OOH). This species is stabilized by NADP + in the catalytic site of the enzyme. These first two steps in the cycle ...

  6. Multicopper oxidase - Wikipedia

    en.wikipedia.org/wiki/Multicopper_oxidase

    Ceruloplasmin EC 1.16.3.1 (ferroxidase), a 6-domain enzyme found in the serum of mammals and birds that oxidizes different inorganic and organic substances; exhibits internal sequence homology that appears to have evolved from the triplication of a Cu-binding domain similar to that of laccase and ascorbate oxidase. Laccase EC 1.10.3.2 (urishiol ...

  7. Squalene monooxygenase - Wikipedia

    en.wikipedia.org/wiki/Squalene_monooxygenase

    Squalene monooxygenase (also called squalene epoxidase) is a eukaryotic enzyme that uses NADPH and diatomic oxygen to oxidize squalene to 2,3-oxidosqualene (squalene epoxide). Squalene epoxidase catalyzes the first oxygenation step in sterol biosynthesis and is thought to be one of the rate-limiting enzymes in this pathway. [5]

  8. Aminocyclopropanecarboxylate oxidase - Wikipedia

    en.wikipedia.org/wiki/Aminocyclopropanecarboxyl...

    The oxygen incorporated need not be derived from O2 with reduced ascorbate as one donor, and incorporation of one atom of oxygen into the other donor. The systematic name of this enzyme class is 1-aminocyclopropane-1-carboxylate oxygenase (ethylene-forming). Other names in common use include ACC oxidase, and ethylene-forming enzyme.

  9. Oxygenase - Wikipedia

    en.wikipedia.org/wiki/Oxygenase

    Oxygenases were discovered in 1955 simultaneously by two groups, Osamu Hayaishi from Japan [4] [5] [6] and Howard S. Mason from the US. [7] [8] Hayaishi was awarded the 1986 Wolf Prize in Medicine "for the discovery of the oxygenase enzymes and elucidation of their structure and biological importance."