An oxidase is any enzyme that catalyzes an oxidation/reduction reaction involving molecular oxygen (O₂) as the electron acceptor. In these reactions, oxygen is reduced to water (H₂O) or hydrogen peroxide (H₂O₂). The oxidases are a subclass of the oxidoreductases. Ribbon diagram of the enzyme TIM, surrounded by the space-filling model of the protein. ... It has been suggested that this article or section be merged into Catalysis. ... Semi-accurate illustration of a redox reaction Redox reactions include all chemical processes in which atoms have their oxidation number (oxidation state) changed. ... General Name, Symbol, Number oxygen, O, 8 Chemical series Nonmetals, chalcogens Group, Period, Block 16, 2, p Appearance colorless (gas) very pale blue (liquid) Atomic mass 15. ... Water is a tasteless, odourless substance that is essential to all known forms of life and is known as the universal solvent. ... Hydrogen peroxide (H2O2) is a very pale blue liquid which appears clear in a dilute solution, slightly more viscous than water. ... In biochemistry, an oxidoreductase is an enzyme that catalyzes the transfer of electrons from one molecule (the oxidant, also called the hydrogen donor or electron donor) to another (the reductant, also called the hydrogen acceptor or electron acceptor). ...

An important example is cytochrome c oxidase, the key enzyme that allows the body to employ oxygen in the generation of energy and the final component of the electron transfer chain. Other oxidases include glucose oxidase, monoamine oxidases, cytochrome P450 oxidases, NADPH oxidase, Xanthine oxidase, L-gulonolactone oxidase, laccase. Cytochrome c oxidase The enzyme cytochrome c oxidase (PDB 2OCC, EC 1. ... The electron transfer chain (also called the electron transport chain, ETC, e-train, or simply electron transport), is any series of protein complexes and lipid-soluble messengers that convert the reductive potential of energized electrons into a cross-membrane proton gradient. ... The glucose oxidase enzyme (GOx) (EC 1. ... Monoamine oxidase Monoamine oxidases (singular abbreviation MAO) (EC 1. ... Cytochrome P450 Oxidase (CYP2E1) Cytochrome P450 oxidase (commonly abbreviated CYP) is a generic term for a large number of related, but distinct, oxidative enzymes (EC 1. ... The NADPH oxidase (nicotinamide adenine dinucleotide phosphate-oxidase) complex is an enzyme complex that is made up of five subunits. ... Xanthine Oxidase The enzyme xanthine oxidase, or XO, (bovine milk enzyme is PDB 1FIQ, EC 1. ... The effect of riboflavin deficiency on the activity of L-gulonolactone oxidase [L-gulono-gamma-lactone: oxygen 2-oxidoreductase, EC 1. ... EC 1. ...

In microbiology, the oxidase test is used as a phenotypic character for the identification of bacterial strains; it determines whether a given bacterium produces cytochrome oxidases (and therefore utilizes oxygen with an electron transfer chain). Bacteria that can or must utilize oxygen are called (facultative) aerobic bacteria. An agar plate streaked with microorganisms Microbiology is the study of microorganisms, which are unicellular or cell-cluster microscopic organisms. ... Oxidase test is a test used in microbiology to determine if a bacterium produces oxidase. ... Individuals in the mollusk species Donax variabilis show diverse coloration and patterning in their phenotypes. ... Phyla/Divisions Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Omnibacteria Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria (singular, bacterium) are a major group of living organisms. ... An aerobic organism or aerobe is an organism that has an oxygen based metabolism. ...