The International Union of Biochemistry and Molecular Biology have developed a nomenclature for enzymes, the EC numbers; each enzyme is described by a sequence of four numbers preceded by "EC", which stands for "Enzyme Commission".
International Union of Biochemistry and Molecular Biology har udviklet en nomenklatur for enzymer, de såkaldte EC-numre; hvert enzym beskrives af en sekvens af fire tal, der kommer efter bogstaverne "EC".