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POLYVALENT ENZYME [1 record]

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Record 1 2011-01-12

English

Subject field(s)
  • Biological Sciences
DEF

Enzyme that acts on more than one substrate. Also describes some allosteric enzymes that respond to two or more specific modulators, each bound to a specific site on the enzyme.

OBS

Two or more multienzyme systems may be connected by one or more polyvalent enzymes in a control network.

French

Domaine(s)
  • Sciences biologiques
DEF

Enzyme qui peut agir sur plus d'un substrat. Décrit aussi certains enzymes allostériques qui répondent à deux modulateurs spécifiques ou plus, chacun étant fixé à un site spécifique de l'enzyme.

CONT

De nombreuses enzymes peuvent mener à bien les deux étapes de conversion de la proenképhaline en enképhaline. Les neuropeptides posent un problème délicat : existe-t-il des enzymes polyvalentes qui traitent tous les peptides, hormones et neuromédiateurs, ou existe-t-il des enzymes spécifiques pour chaque peptide? La réponse à cette question aura des conséquences pratiques importantes.

Spanish

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