Biochemistry and physiology

Isoelectric point

pI = (pKa1 + pKa2)/2

the two pKa values that bracket the neutral form

Watch forAcidic amino acids: average the two lowest. Basic: the two highest.

Apply it · 3 questions

  1. Isoelectric point of an acidic amino acidProteins and enzymes · set 1 · medium
  2. Isoelectric point of a basic amino acidProteins and enzymes · set 1 · medium
  3. Glycine: calculating the isoelectric pointProteins and enzymes · set 1 · easy