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Association constant

Definition

noun

A mathematical constant that describes the bonding affinity between two molecules at equilibrium.


Supplement

It is the measure of the affinity of an enzyme for its substrate. An example is the measure of the strength of binding in the hapten-antibody interaction.


Symbol: Ka

Synonyms:

Compare: dissociation constant


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How do you calculate dissociation constant?

Kd is one form of an equilibrium constant. You can write a reaction as either a dissociation or association reaction. AB <--> A + B, Kd = [A][B]/[AB] or A + B <--> AB, Keq = 1/Kd = [AB]/[A][B] ...

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