activator

Also contains definition of: enzyme activator
https://doi.org/10.1351/goldbook.A00104
A substance, other than the @[email protected] or one of the substrates, that increases the rate of a catalysed reaction without itself being consumed; the process is called @[email protected] An activator of an enzyme-catalysed reaction may be called enzyme activator, if it acts by binding to the enzyme.
See also:
effector
Source:
PAC, 1993, 65, 2291. (Nomenclature of kinetic methods of analysis (IUPAC Recommendations 1993)) on page 2292 [Terms] [Paper]