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an enzyme that catalyzes the conversion of a proenzyme to an active enzyme

an enzyme that catalyzes the conversion of a proenzyme to an active enzyme

A rather large group of enzymes comprising not only those transferring phosphate but also diphosphate, nucleotidyl residues, and others. These have also been subdivided according to the acceptor group. (From Enzyme Nomenclature, 1992) EC 2.7.

[Greek] A substance which transforms zymogens to enzymes.

Name given to organized substances (possibly enzymes) which activate enzymes, e. g., the entrokinase of the duodenum which activates trypsin.