Due to the ionizable nature of -NH2 and -COOH groups the structure of amino acids changes in solutions of different pHs. Share with your friends Share 0 Jahirul Mazumder answered this Please refer the link below: https://www.meritnation.com/ask-answer/question/at-different-ph-the-structures-of-amino-acids-change-becaus/biomolecules/8442059 0 View Full Answer