Isoelectric point

{
  "id": "MLC-T-CHM-006181",
  "term": "Isoelectric point",
  "field": "Chemistry",
  "definition": "The specific pH at which a particular molecule or surface carries no net electrical charge. For amphoteric molecules like amino acids, it is the pH where the concentration of zwitterions is maximized and the molecule's net charge is zero. At this pH value, the electrophoretic mobility of the species is zero, causing it to cease migration in an electric field.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "electric charge",
    "kind-of-quantity"
  ],
  "references": [
    "PAC, 1972, 31, 577. 'Manual of Symbols and Terminology for Physicochemical Quantities and Units, Appendix II: Definitions, Terminology and Symbols in Colloid and Surface Chemistry' on page 618 (https://doi.org/10.1351/pac197231040577)",
    "PAC, 1994, 66, 891. 'Quantities and units for electrophoresis in the clinical laboratory (IUPAC Recommendations 1994)' on page 894 (https://doi.org/10.1351/pac199466040891)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/isoelectric-point/"
}