Dictionary
active site
noun
Definition of ACTIVE SITE
: a region on the surface of an enzyme whose shape permits binding only of a specific molecular substrate that then undergoes catalysis
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First Known Use of ACTIVE SITE
1957
Medical Dictionary
active site
noun
Medical Definition of ACTIVE SITE
: a region especially of a biologically active protein (as an enzyme) where catalytic activity takes place and whose shape permits the binding only of a specific reactant molecule
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