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active site

Wikipedia English The Free Encyclopedia

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Active site
In biology, the active site is the region of an enzyme where substrate molecules bind and undergo a chemical reaction. The active site consists of residues that form temporary bonds with the substrate (binding site) and residues that catalyse a reaction of that substrate (catalytic site). The active site is usually a groove or pocket of the enzyme which can be located in a deep tunnel within the enzyme, or between the interfaces of multimeric enzymes. An active site can catalyse a reaction repeatedly as its residues are not altered at the end of the reaction (they may change during the reaction, but are regenerated by the end).

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WordNet 2.0 Dictionary

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active site

1. the part of an enzyme or antibody where the chemical reaction occurs
(hypernym) site, situation
(part-holonym) enzyme

General Chemistry Glossary

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active site
A pocket or crevice on an enzyme molecule that fits reactant molecules like a hand in a glove. The active site lowers the activation energy for reaction.

Glosarium Pusat Bahasa Depdiknas Indonesia

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active site
B: (Biologi) tapak aktif

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