What is enzyme?

  • (noun): Any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions.

Enzyme

Enzymes ( /ˈɛnzaɪmz/) are large biological molecules responsible for the thousands of chemical interconversions that sustain life. They are highly selective catalysts, greatly accelerating both the rate and specificity of metabolic reactions, from the digestion of food to the synthesis of DNA. Most enzymes are proteins, although some catalytic RNA molecules have been identified. Enzymes adopt a specific three-dimensional structure, and may employ organic (e.g. biotin) and inorganic (e.g. magnesium ion) cofactors to assist in catalysis.

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Some articles on enzyme:

UGT1A3
... UDP-glucuronosyltransferase 1-3 is an enzyme that in humans is encoded by the UGT1A3 gene ... This gene encodes a UDP-glucuronosyltransferase, an enzyme of the glucuronidation pathway that transforms small lipophilic molecules, such as steroids, bilirubin, hormones, and drugs, into water-soluble ... Substrates of this enzyme include estrone, 2-hydroxyestrone, and metabolites of benzo alpha-pyrene ...
Enzyme - Industrial Applications
... Enzymes are used in the chemical industry and other industrial applications when extremely specific catalysts are required ... However, enzymes in general are limited in the number of reactions they have evolved to catalyze and also by their lack of stability in organic ... active area of research and involves attempts to create new enzymes with novel properties, either through rational design or in vitro evolution ...
UBE1C
... activity • ligand-dependent nuclear receptor binding • NEDD8 activating enzyme activity • protein heterodimerization activity Cellular component ... Ubiquitination involves at least three classes of enzymes ubiquitin-activating enzymes, or E1s, ubiquitin-conjugating enzymes, or E2s, and ubiquitin-protein ligases, or E3s ... a member of the E1 ubiquitin-activating enzyme family ...
UDP-N-acetylglucosamine-lysosomal-enzyme N-acetylglucosaminephosphotransferase
... In enzymology, an UDP-N-acetylglucosamine-lysosomal-enzyme N-acetylglucosaminephosphotransferase (EC 2.7.8.17) is an enzyme that catalyzes the chemical reaction UDP-N-acetyl-D-glucosamine + lysosomal-enzyme D-mannose ... This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing groups transferases for other substituted phosphate groups ... The systematic name of this enzyme class is UDP-N-acetyl-D-glucosaminelysosomal-enzyme N-acetylglucosaminephosphotransferase ...
UGT1A4
... UDP-glucuronosyltransferase 1-4 is an enzyme that in humans is encoded by the UGT1A4 gene ... This gene encodes a UDP-glucuronosyltransferase, an enzyme of the glucuronidation pathway that transforms small lipophilic molecules, such as steroids, bilirubin ... This enzyme has some glucuronidase activity towards bilirubin, although it is more active on amines, steroids, and sapogenins ...