The protein part of an enzyme without the cofactor necessary for
catalysis. The cofactor can be a metal ion, an organic molecule (
coenzyme), or a combination of both.
Source: PAC, 1994,
66, 2587. (
Glossary of bioanalytical nomenclature - Part 1: General terminology, body fluids, enzymology, immunology (IUPAC Recommendations 1994)) on page 2593 [
Terms] [
Paper]