1. An enzyme catalyzing the conversion of a proenzyme to an active enzyme; e.g., enteropeptidase (enterokinase). 2. An enzyme catalyzing the transfer of phosphate groups. For individual kinases, see specific name.

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ki·nase 'kī-.nās, -.nāz n any of various enzymes that catalyze the transfer of phosphate groups from a high-energy phosphate-containing molecule (as ATP or ADP) to a substrate called also phosphokinase

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1. an agent that can convert the inactive form of an enzyme (see proenzyme) to the active form.
2. an enzyme that catalyses the transfer of phosphate groups. An example is phosphofructokinase.

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ki·nase (kiґnās) 1. a term used in the recommended and trivial names of the phosphotransferases and diphosphotransferases of the transferase class [EC 2.7.1–6] that catalyze the transfer of a high-energy phosphate group from a donor compound (e.g., ATP or GTP) to an acceptor compound (alcohol, carboxyl, nitrogenous group, or another phosphate group). 2. a suffix used in the trivial names of some enzymes that convert an inactive or precursor form. See also protein kinase.

Medical dictionary. 2011.

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  • kinase — [ kinaz ] n. f. • 1902; du gr. kinein « mettre en mouvement » et ase ♦ Biochim. Enzyme capable d activer par phosphorylation un métabolite, un autre enzyme (phosphorylase kinase) ou une protéine impliquée dans la réponse cellulaire à certains… …   Encyclopédie Universelle

  • Kinase — Enzymklassifikation EC, Kategorie …   Deutsch Wikipedia

  • kinase — ki nase (k[imac] n[=a]s), n. (Biochemistry) One of a class of enzymes that catalyze transfer of a phosphate group from ATP to another molecule; it is a type of phosphorylase. [PJC] …   The Collaborative International Dictionary of English

  • kinase — 1902, from Gk. kinein to move (see CITE (Cf. cite)) + chemical suffix ASE (Cf. ase) …   Etymology dictionary

  • kinase — [kī′nās΄, kin′ās΄] n. [ KIN(ETIC) + ASE] an enzyme capable of activating a zymogen or one causing the transfer of the terminal phosphate group, generally from ATP, to a receiving molecule …   English World dictionary

  • Kinase — Les kinases, appelées à tort phosphorylases[1] (catalyseur de la phosphorolyse), sont des enzymes du groupe des transférases catalysant les réactions de phosphorylation par l ajout d un ion phosphate à une molécule cible. La molécule cible,… …   Wikipédia en Français

  • kinase — /kuy nays, nayz, kin ays, ayz/, n. Biochem. a transferase that catalyzes the phosphorylation of a substrate by ATP. [1900 05; KIN(ETIC) + ASE] * * * ▪ enzyme  an enzyme that adds phosphate groups (PO43−) to other molecules. A large number of… …   Universalium

  • Kinase — In chemistry and biochemistry, a kinase, alternatively known as a phosphotransferase, 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… …   Wikipedia

  • kinase — Widely used abbreviation for phosphokinase, an enzyme catalysing transfer of phosphate from ATP to a second substrate usually specified in less abbreviated name, eg. creatine phosphokinase (creatine kinase), protein kinase. Serine/threonine… …   Dictionary of molecular biology

  • kinase — noun Etymology: International Scientific Vocabulary, from kinetic Date: 1947 any of various enzymes that catalyze the transfer of phosphate groups from a high energy phosphate containing molecule (as ATP) to a substrate compare protein kinase …   New Collegiate Dictionary

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