TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
K'M [1 record]
Record 1 - internal organization data 2011-01-11
Record 1, English
Record 1, Subject field(s)
- Biological Sciences
Record 1, Main entry term, English
- apparent Km
1, record 1, English, apparent%20Km
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- K'm 2, record 1, English, K%27m
correct
- apparent Michaelis constant 2, record 1, English, apparent%20Michaelis%20constant
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
Substrate concentration which gives a reaction velocity corresponding to half the Vmax (app). 1, record 1, English, - apparent%20Km
Record number: 1, Textual support number: 1 CONT
It is recognized that the kinetic constants measured with immobilized enzymes are not true kinetic constants equivalent to those obtained in homogeneous reactions, but are apparent values because of the effects of diffusion and other physical factors.... The Michaelis constant determined for immobilized enzymes is necessarily only an apparent constant (K'm) and should be distinguished clearly from the constant normally determined with the soluble enzyme. 3, record 1, English, - apparent%20Km
Record number: 1, Textual support number: 1 OBS
Km (app) and K'm are abbreviations of apparent Km. 2, record 1, English, - apparent%20Km
Record number: 1, Textual support number: 2 OBS
The term Km should read Km 4, record 1, English, - apparent%20Km
Record 1, French
Record 1, Domaine(s)
- Sciences biologiques
Record 1, Main entry term, French
- constante apparente de Michaelis
1, record 1, French, constante%20apparente%20de%20Michaelis
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- Km apparent 2, record 1, French, Km%20apparent
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Constante empirique égale à la concentration en substrat pour laquelle on a une vitesse égale à la moitié de la vitesse maximale; ce Km ne peut pas être employé pour calculer la vitesse initiale d'un enzyme allostérique, étant donné que le rapport vo/(S) n'est pas une hyperbole rectangulaire, comme l'exigent les postulants et les équations de Michaelis-Menten. Ainsi, un modulateur négatif abaissera la vitesse de la réaction à une concentration fixe, non saturante, de substrat, alors qu'un modulateur positif augmentera cette vitesse. 2, record 1, French, - constante%20apparente%20de%20Michaelis
Record number: 1, Textual support number: 1 CONT
La «constante de Michaelis» d'un substrat est égale à la constante apparente de Michaelis de la réaction dans le sens direct, lorsque le second substrat est saturant. De la même manière, la «constante de Michaelis» d'un produit est égale à la constante apparente de Michaelis de la réaction dans le sens inverse lorsque le second produit est saturant. Les «constantes d'inhibition» du premier substrat et du dernier produit sont les vraies constantes de dissociation correspondant à ce substrat et à ce produit. 3, record 1, French, - constante%20apparente%20de%20Michaelis
Record 1, Spanish
Record 1, Textual support, Spanish
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