Isoelectric Point

Name:
Isoelectric Point
Detailed information:
The pH at which the net charge on a molecule in solution is zero. At this pH, amino acids exist almost entirely in the zwitterion state, that is, the positive and negative groups are equally ionized. A solution of proteins or amino acids at the isoelectric point exhibits minimum conductivity, osmotic pressure, and viscosity. Proteins coagulate best at this point. Typical isoelectric points (pH) are glycine 6.6, gelatin 4.7, serum albumin 5.4.