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MICHAELIS-MENTEN RATE EQUATION [2 records]
Record 1 - internal organization data 2011-08-09
Record 1, English
Record 1, Subject field(s)
- Biological Sciences
Record 1, Main entry term, English
- reaction rate
1, record 1, English, reaction%20rate
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The number of molecules (or atoms) reacting per unit time. It has been explained by a combination of two theoretical models, the so-called collision theory and the transition state theory.... The collision theory provides a qualitative description of the factors that affect rate and proposes that reactions occur as a result of collisions between the reacting species.... The transition state theory expands upon the collision theory by proposing that an unstable transition state, or activated complex, is formed when reactants collide with the proper orientation and with a collision energy at least equal to the activation energy. 1, record 1, English, - reaction%20rate
Record number: 1, Textual support number: 1 OBS
An important numerical relationship emerges from the Michaelis-Menten equation in the special case when the initial reaction rate is exactly one-half the maximum velocity : we find that the substrate concentration is then equal to the enzyme's Km. 2, record 1, English, - reaction%20rate
Record 1, French
Record 1, Domaine(s)
- Sciences biologiques
Record 1, Main entry term, French
- vitesse de réaction
1, record 1, French, vitesse%20de%20r%C3%A9action
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Du fait de leur pouvoir catalytique, les enzymes sont capables de faire s'opérer, à 37°C et dans l'eau (seules conditions compatibles avec la vie), des réactions chimiques qui pourraient parfois se faire en laboratoire, mais dans des conditions beaucoup plus rigoureuses de température et de pression et souvent dans des solvants non aqueux. Les enzymes provoquent ainsi des accélérations considérables des vitesses de réaction : lorsqu'elle est catalysée par l'uréase du haricot rouge, la réaction d'hydrolyse de l'urée se produit 1014fois plus vite que lors d'une hydrolyse chimique classique à la même température. 1, record 1, French, - vitesse%20de%20r%C3%A9action
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2011-08-09
Record 2, English
Record 2, Subject field(s)
- Biological Sciences
Record 2, Main entry term, English
- reversible inhibition
1, record 2, English, reversible%20inhibition
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- reversible enzyme inhibition 2, record 2, English, reversible%20enzyme%20inhibition
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
In reversible inhibition of enzymes... the inhibitor participates in a rapidly established, easily reversible equilibrium with the enzyme or enzyme-substrate complex, which can be analyzed in terms of the Michaelis-Menten formalism.... The three major types of reversible enzyme inhibition, competitive, uncompetitive, and noncompetitive, can be experimentally distinguished by the effects of the inhibitor on the reaction kinetics of the enzyme, which may be analyzed in terms of the basic Michaelis-Menten rate equation. For valid kinetic analysis the inhibitor must combine rapidly and reversibly with the enzyme or enzyme-substrate complex. 2, record 2, English, - reversible%20inhibition
Record 2, French
Record 2, Domaine(s)
- Sciences biologiques
Record 2, Main entry term, French
- inhibition réversible
1, record 2, French, inhibition%20r%C3%A9versible
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- inhibition enzymatique réversible 2, record 2, French, inhibition%20enzymatique%20r%C3%A9versible
correct, feminine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Inhibition non permanente où l'inhibiteur ne se combine pas de façon covalente sur l'enzyme. L'inhibition est dans ce cas un processus rapide. En général, une dialyse, éliminant l'inhibiteur, restaure l'activité de l'enzyme. Les inhibiteurs agissant de cette façon sont assez spécifiques. On distingue plusieurs modalités de l'inhibition réversible appelées inhibitions : compétitive, non compétitive et incompétitive. 2, record 2, French, - inhibition%20r%C3%A9versible
Record number: 2, Textual support number: 1 CONT
Les trois types principaux d'inhibition enzymatique réversible, compétitive, incompétitive et non compétitive se distinguent expérimentalement par les effets de l'inhibiteur sur la cinétique de la réaction enzymatique étudiée à l'aide de l'équation de Michaelis-Menten. Pour une analyse cinétique valable, l'inhibiteur doit se combiner rapidement et réversiblement avec l'enzyme ou avec le complexe enzyme-substrat. 3, record 2, French, - inhibition%20r%C3%A9versible
Record 2, Spanish
Record 2, Textual support, Spanish
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