Die iso-elektriese punt (pI, pH (I), IEP) is die pH waarteen 'n bepaalde liggaam geen netto elektriese lading in die statutêre gemiddelde dra nie. Zwitterioon Proteïen massaspektrometrie IPC – Isoelectric Point Calculator — calculate protein isoelectric point using over 15 methods prot pi - protein isoelectric point — an online program for calculating pI of proteins (include multiple subunits and posttranslational modifications) CurTiPot — a suite of spreadsheets for computing acid-base equilibria (charge versus pH plot of amphoteric molecules e.g., amino acids) SWISS-2DPAGE — a database of isoelectric points coming from two-dimensional polyacrylamide gel electrophoresis (~ 2,000 proteins) Proteome-pI — a proteome isoelectric point database (predicted isoelectric point for all proteins) Hierdie artikel is ’n saadjie. Voel vry om Wikipedia te help deur dit uit te brei.