allosteric enzymes

https://doi.org/10.1351/goldbook.A00240
Enzymes
which contain regions to which small, regulatory molecules (cf.
effector
) may bind in addition to and separate from
substrate
binding sites. On binding the
effector
, the catalytic activity of the enzyme towards the substrate may be enhanced, in which case the
effector
is an
activator
, or reduced, in which case it is an
inhibitor
.
Source:
PAC, 1992, 64, 143. (Glossary for chemists of terms used in biotechnology (IUPAC Recommendations 1992)) on page 146 [Terms] [Paper]