catalytic site

catalytic site
in an enzyme, the portion of the active site that converts the substrate to a reaction product or otherwise interacts with it. Cf. binding s.

Medical dictionary. 2011.

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  • catalytic site — The part of the surface of an enzyme molecule (usually only a small portion of the total) necessary for the catalytic process …   Glossary of Biotechnology

  • catalytic site — See active site …   Dictionary of microbiology

  • Catalytic triad — A catalytic triad commonly refers to the three amino acid residues found inside the active site of certain protease enzymes: serine (S), aspartate (D) and histidine (H). They work together to break peptide bonds on polypeptides. More generally,… …   Wikipedia

  • active site — The part of an enzyme that binds the substrate to form an enzyme substrate complex and catalyze the reaction. Also called the catalytic site …   Dictionary of microbiology

  • Group I catalytic intron — Group I catalytic introns are large self splicing ribozymes. They catalyze their own excision from mRNA, tRNA and rRNA precursors in a wide range of organisms. The core secondary structure consists of nine paired regions (P1 P9). These fold to… …   Wikipedia

  • Active site — The active site of an enzyme contains the catalytic and binding sites. The structure and chemical properties of the active site allow the recognition and binding of the substrate.The active site is usually a small pocket at the surface of the… …   Wikipedia

  • Selective catalytic reduction — (SCR) is a means of converting nitrogen oxides, also referred to as chem|NO|x with the aid of a catalyst into diatomic nitrogen, chem|N|2, and water, chem|H|2|O. A gaseous reductant, typically anhydrous ammonia, aqueous ammonia or urea, is added… …   Wikipedia

  • active site — n a region esp. 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 * * * the part of an enzyme or other catalyst at which the reaction… …   Medical dictionary

  • allosteric site — a specific site on a multi subunit enzyme that is not the substrate binding site but that when reversibly bound by an effector induces a conformational change in the enzyme, altering its catalytic properties …   Medical dictionary

  • binding site — in an enzyme or other protein, the three dimensional configuration of specific groups on specific amino acids that binds particular compounds such as substrates or effectors, with high affinity and specificity. Cf. catalytic s …   Medical dictionary

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