Michaelis-Menten constant

German: Michaelis-Menten-Konstante
Japanese: ミカエリス・メンテン定数

Enzymology. Abbr. Km. Named after Leonor Michaelis (1875-1945) and Maude Lenore Menten (1879-1960). A dissociation constant that characterizes the binding of an enzyme to a substrate. It is the concentration of the substrate at which half of the maximal velocity of an enzyme-catalyzed reaction is achieved and 50% of the enzyme molecules are bound to the substrate.

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