isoelectric point

German: isoelektrischer Punkt
Japanese: 等電点

Biochemistry. The pH at

which the net charge on the macromolecules (e.g., proteins) is zero. This property is used in protein purification because it is the pH at which solubility is often minimal and at which mobility in an isoelectric focusing is zero, and therefore the point at which the protein will accumulate.

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