The amino acid residues at the catalytic site of an enzyme. These residues provide the binding and activation energy needed to move the substrate into its transition stante and bridge the energy barrier of the reaction undergoing catalysis.
The region on the surface of an enzyme where the substrate binds, and where catalysis occurs.
A specific region of an enzyme where the substrate binds
Enzymes are biological materials which catalyze reactions by binding into the active site of the starting material. Many poisons prevent normal enzyme funciton because they have the right structure to bind to particular enzymes in place of the normal reactants. Some drugs are designed to do this to stop unwanted reactions from occurring. When some molecule other than the starting material is bound into the active site, then the reaction cannot occur.
A site on an ice nucleus that forms ice at a lower supersaturation or a smaller supercooling than elsewhere, resulting from a local impurity or defect giving a region of local strain and deformation in the atomic arrangement of the nucleus, matching it more closely to the arrangement of molecules in ice, and a lower energy requirement for nucleation.
That portion of a protein, usually an enzyme, whose structural integrity is required for function (e.g., the substrate binding site of an enzyme). Enzymes may have more than one active site and so catalyse more than one reaction. Competitive inhibitors of an enzyme reaction bind reveribly to the active site and reduce its availability for normal substrate.
the portion of an enzyme that interacts with the substrate.
The region of an enzyme where a chemical reaction catalyzed by the enzyme occurs. Mutations that affect the active site of an enzyme can abolish or alter the function of the protein. Altered enzyme activity or function is a common theme in cancer. See also Enzyme, Protease.
the part of an enzyme or antibody where the chemical reaction occurs
a indentation or cavity whereby a reactant molecule is attracted to
The region of an enzyme to which a substrate binds and at which a chemical reaction occurs.
The region of an enzyme molecule where the enzyme acts on the substrate.
Location on a catalyst surface where reaction takes place.
The part of an enzyme that provides catalysis. 50
The region of an enzyme responsible for catalysis.
Region of an enzyme molecule where the substrate binds and undergoes a catalyzed reaction.
Region of an enzyme surface to which a substrate molecule binds in order to undergo a catalyzed reaction.
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.
the site on an enzyme molecule where the substrate molecule binds and where its reaction is facilitated.
The area of an anzyme that accepts a substrate and catalyzes its reaction with another.
a pocket in an enzyme with a specific shape and chemical makeup necessary to bind a substrate
The part of a protein that must be maintained in a specific shape if the protein is to be functional for example, in an enzyme, the part to which the substrate binds.
ligand binding site (usually a fold or cleft in the structure of an enzyme) where chemical reactions take place.
The region of a protein molecule which binds the specific substrate and chemically modifies it (in an enzyme) or interacts with it (in a receptor).
The region on the surface of an enzyme where the substrate binds and the chemical reaction occurs.
The active site of an enzyme is the binding site where catalysis occurs. The structure and chemical properties of the active site allow the recognition and binding of the substrate.