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

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

23i8eb9.jpg

pH 1

2yv41md.jpg

pH 6

29omzki.jpg

pH 13

Regards,
Andrew Johnson
 
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Answers and Replies

  • #2
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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.
 

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