An
enzyme or enzyme complex consisting of, or derived from, an organism or cell culture (in cell-free or whole-cell forms) that catalyses metabolic reactions in living organisms and/or
substrate conversions in various chemical reactions.
Source: PAC, 1992,
64, 143. (
Glossary for chemists of terms used in biotechnology (IUPAC Recommendations 1992)) on page 147 [
Terms] [
Paper]