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Glossary

Isoelectric point (pI)

The pH at which a peptide carries no net charge. It affects solubility and how the peptide behaves in chromatography.

Further reading

Peptide solubility basics: how sequence decides what dissolves
Why some peptides dissolve in water and others need acid, base or organic solvent: net charge, hydrophobic residues and the logic of choosing a solvent.

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For laboratory research only. Nothing on peptide.wiki is medical advice. The compounds described are not for human or veterinary use, and research-grade material is not a medicine.