Dictionary > Isoionic point

Isoionic point

Definition
noun
The pH wherein a protein or a zwitterion in a deionized solution has equal number of cations and anions, resulting in no net charge.
Supplement
This term is used in ion exchange chromatography. It is at this point wherein amino acid does not migrate in the electric field.
Word origin: iso– means equal + ion
Compare: isoelectric point


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