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Allosteric enzyme definition
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An allosteric enzyme is an enzyme that contains a region to which small, regulatory molecules ("effectors") may bind in addition to and separate from the substrate binding site and thereby affect the catalytic activity.

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 a de-activator or inhibitor.

See also:
(AES) definition
Alkynes definition
Alkyl Group definition
air velocity definition
allotropic definition
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