Active site - Binding site - Catalytically perfect enzyme - Coenzyme - Cofactor - EC number - Enzyme catalysis - Enzyme kinetics - Enzyme inhibitor - Lineweaver-Burk plot - Michaelis-Menten kinetics Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ... A representation of the 3D structure of myoglobin, showing coloured alpha helices. ... Ribbon diagram of the enzyme TIM, surrounded by the space-filling model of the protein. ... The active site of an enzyme is the binding site where catalysis occurs. ... A binding site is a region on a protein to which specific ligands bind. ... Catalytically perfect enzyme or kineticall perfect enzyme is an enzyme that catalyzes so efficiently, that almost every time enzyme meets its substrate, the reaction occurs. ... Coenzymes are a small organic non-protein molecules that carry chemical groups between enzymes. ... A cofactor is any substance that needs to be present in addition to an enzyme to catalyze a certain reaction. ... The Enzyme Commission number (EC number) is a numerical classification scheme for enzymes, based on the chemical reactions they catalyze. ... Enzyme catalysis is the catalysis of chemical reactions by enzyme molecules. ... It has been suggested that this article or section be merged with Enzyme. ... HIV protease in a complex with the protease inhibitor ritonavir. ... In biochemistry, the Lineweaver-Burk plot (or double reciprocal plot) is a graphical representation of the Lineweaver-Burk equation of enzyme kinetics, described by Hans Lineweaver and Dean Burk in 1934. ... Michaelis-Menten kinetics describes the kinetics of many enzymes. ...

EC1 Oxidoreductases/list (catalase, dehydrogenase, hydroxylase, oxygenase, oxidase, peroxidase) - EC2 Transferases/list (methyltransferase, acyltransferase, glycosyltransferase, phosphotransferase, polymerase, kinase) - EC3 Hydrolases/list (esterase, DNA glycosylases, glycosidase, protease, helicase) - EC4 Lyases/list (carboxy-lyases, aldolase, dehydratase, synthase) - EC5 Isomerases/list (mutase, topoisomerase) - EC6 Ligases/list (DNA ligase, aminoacyl tRNA synthetase) In biochemistry, an oxidoreductase is an enzyme that catalyzes the transfer of electrons from one molecule (the oxidant, also called the hydrogen donor or electron donor) to another (the reductant, also called the hydrogen acceptor or electron acceptor). ... Catalase (human erythrocyte catalase: PDB 1DGF, EC 1. ... A dehydrogenase is an enzyme that oxidizes a substrate by transferring one or more protons and a pair of electrons to an acceptor, usually NAD/NADP or a flavin coenzyme such as FAD or FMN. Common examples of dehydrogenase enzymes in the TCA cycle are pyruvate dehydrogenase, isocitrate dehydrogenase, and... Hydroxylation is any chemical process that introduces one or more hydroxyl groups (-OH) into a compound (or radical) thereby oxidising it. ... An oxygenase is any enzyme that oxidizes a substrate by transferring the oxygen from molecular oxygen O2 (as in air) to it. ... An oxidase is any enzyme that catalyzes an oxidation/reduction reaction involving molecular oxygen (O2) as the electron acceptor. ... Glutathione Peroxidase 1 A peroxidase (eg. ... In biochemistry, a transferase is an enzyme that catalyzes the transfer of a functional group (e. ... Methyltransferase can refer to: DNA methyltransferase Histone methyltransferase Category: ... Glycosyltransferases are a group of enzymes that act as a catalyst for the transfer of a monosaccharide from a glycosylamine derivative to an acceptor. ... Phosphotransferase is a category of enzymes with the quality of catalyzing phosphorylation. ... ITaq DNA polymerase A polymerase (EC 2. ... In biochemistry, a kinase is a type of enzyme that transfers phosphate groups from high-energy donor molecules, such as ATP, to specific target molecules (substrates); the process is termed phosphorylation. ... In biochemistry, a hydrolase is an enzyme that can break a chemical bond by hydrolysis. ... An esterase is an hydrolase enzyme that splits esters into a acid and an alcohol in a chemical reaction with water called hydrolysis. ... DNA glycosylases are a family of enzymes involved in base excision repair. ... Glycoside hydrolases (also called glycosidases) catalyze the hydrolysis of the glycosidic linkage to generate two smaller sugars. ... Proteases (proteinases, peptidases, or proteolytic enzymes) are enzymes that break peptide bonds between amino acids of proteins. ... Helicases are a class of enzymes vital to all living organisms. ... In biochemistry, a lyase is an enzyme that breaks various chemical bonds by means other than hydrolysis and oxidation, often forming a new double bond or a new ring structure. ... Aldolase is an enzyme which catalyses the aldol reaction: The substrate, fructose 1,6-bisphosphate (F-1,6-BP) is broken down into glyceraldehyde 3-phosphate and dihydroxyacetone phosphate (DHAP). ... Dehydratase is an enzyme that catalyzes the removal of oxygen and hydrogen from organic compounds in the form of water. ... In biochemistry, a synthase is an enzyme which catalyzes a synthesis process. ... In biochemistry, an isomerase is any enzyme that catalyses the interconversion of isomers. ... An enzyme that catalyzes the shifting of a functional group from one position to another within the same molecule. ... Topoisomerases (type I: EC 5. ... In biochemistry, a ligase (from the Latin verb ligāre — to bind or to glue together) is an enzyme that can catalyse the joining of two large molecules by forming a new chemical bond, usually with accompanying hydrolysis of a small chemical group pendant to one of the larger molecules. ... It has been suggested that sticky end/blunt end be merged into this article or section. ... An aminoacyl tRNA synthetase (abbreviated aaRs) is an enzyme that catalyzes the binding of a specific amino acid to a tRNA to form an aminoacyl-tRNA. The synthetase hydrolyzes ATP to bind the appropriate amino acid to the 3 hydroxyl of the tRNA molecule. ...