1)NH2-CH2-CO-NH-CH(CH(CH3) 2)-COOH = NH2-CH2-COOH + NH2-CH(CH(CH3)2)-COOH2) CH3-CH(NH2)-CO-NH-CH(CH2-Ind*)-COOH = CH3-CH(NH2)-COOH + NH2-CH(CH2-Ind)-COOH