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.
In biology, the active site is a small port in an enzyme where substrate molecules bind and undergo a chemical reaction. This chemical reaction occurs when a substrate collides with and slots into the active site of an enzyme. The active site is usually found in a 3-D groove or pocket of the enzyme, lined with amino acid residues (or nucleotides i...
(from the article `enzyme`) Only a certain region of the enzyme, called the active site, binds to the substrate. The active site is a groove or pocket formed by the folding ... ...have molecular weights of several hundred. Because of the difference in size between the two, only a fraction of the enzyme is in contact with the ... ...a...
A computer model of the active site of an enzyme called mammalian zinc metalloendopeptidase, or EP 24.15. Credit: M. J. Glucksman The region on the surface of an enzyme to which a specific substrate or set of substrates binds. The properties of the active site are determined by the sequences of a...
<chemistry> A specific region of an enzyme where a substrate binds and catalysis takes place (binding site). ... (06 May 1997) ... 
the three-dimensional region of an enzyme or other catalyst at which the reaction occurs, binding the substrate and facilitating its conversion to a reaction product. See also binding site and catalytic site.
The portion of an enzyme which specifically combines with the substrate.Usually applied to catalytic site of an enzyme or where chemical transformations take placeThe region of a protein that binds to substrate molecule(s) and facilitates a specific chemical conversion. Produced by juxtaposition of amino acid residues as a consequence of the protein's tertiary structure.
Type: Term Definitions: 1. that portion of an enzyme molecule at which the actual reaction proceeds; considered to consist of one or more residues or atoms in a spatial arrangement that permits interaction with the substrate to effect its reaction.
[n] - the part of an enzyme or antibody where the chemical reaction occurs
location within an enzyme where substrate(s) bind
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. See also: Enzyme.
noun the part of an enzyme or antibody where the chemical reaction occurs
the part of an enzyme that interacts with the substrate during catalysis.