Confirming Glycine Structures at pH's 1,6,13

[Johnson]

Structures of Glycine at pH's 1, 5.97 and 13, just wondering if anyone can confirm these, been a while since molecular bio.

pH 1

pH 6

pH 13

Regards,
Andrew Johnson

 

[SW VandeCarr]

Structures of Glycine at pH's 1, 5.97 and 13, just wondering if anyone can confirm these, been a while since molecular bio.

It looks correct. The isoelectric point for glycine is about pH 6.1 where it exists as a Zwitterion (having both negative and positive charges which cancel to net 0 charge). At high pH it's anionic and at low pH it's cationic as you would expect.