<prompt> Which of the following is a propey of amino acids at isoelectric pH?Maximum buffering actionMaximum precipitabilityMaximum solubulityMobility in electric field  <response>: The propeies of an amino acid at isoelectric pH are as follows: Maximum precipitability Minimum buffering action note: maximum buffering action is when the pHpKa, and not at isoelectric pH Minimum solubility No mobility in an electric field Reference Reference: Harpers illustrated biochemistry 30th edition 