At pH 7, the amino acid will be in its neutral form which is the zwitterion.
Recall that the zwitterion is the net neutral molecular form with separation of charges.
Modify lysine, below, to show the predominant form at pH 7.
Modify the amino acid by adding or removing atoms or bonds, and by adding charges where appropriate. If you make a mistake or wish to reset the image, click on the red arrows in the drawing menu.
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