<enzyme> An enzyme which is not secreted or exported out of the cell, but is kept and used by the cell which made it. ... Compare: ectoenzyme. ... An enzyme that makes bonds within polymers (chains of similar units). ... (09 Oct 1997) ... 
Type: Term Pronunciation: en′dō-en′zīm Definitions: 1. An enzyme that catalyzes processes involved in intracellular hydration. Synonyms: intracellular enzyme
an enzyme that functions within a cell. Cf. exoenzyme.