Oxidase

Part of speech: noun

Definitions

1. A type of biological catalyst that promotes the oxidation of various substrates by enabling electron transfer to molecular oxygen
2. This enzyme plays a crucial role in metabolic processes by facilitating oxidation and transferring electrons from substrates to oxygen molecules
3. An enzyme that facilitates the chemical reaction where a substrate loses electrons and oxygen acts as the electron acceptor

Etymology: The suffix "-ase" is a deliberate invention, not an ancient word. It was devised by the French chemist Gabriel Bertrand to mark enzymes, and it was built by cutting "-ose" off "diastase," the name of an enzyme first isolated from malt. Chemists had already noticed that the ending "-ose" belonged to sugars, so Bertrand's new ending gave biochemists a tidy way to name the catalysts that acted on them. "Oxidase" follows that pattern directly. It combines "oxide," a term from chemistry for a compound of oxygen, with the new "-ase," so the name signals an enzyme that works through oxidation. Bertrand himself was among the researchers who worked on these oxygen-transferring enzymes, and the label he helped establish stuck, so that today a whole family of enzymes carries the same ending.