Glycine is a weak acid and it can exist in either of two states, an uncharged zwitterion, or a charged glycinate anion (that is to say, negatively charged).
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- 甘氨酸是一种弱酸,只能以两种形态存在:不带电荷的两性离子,或者带负电荷的氨基酸阴离子。