| 2B4N: reference: NMR and alanine scan studies of glucose-dependent insulinotropic polypeptide in water., Alana I, Parker JC, Gault VA, Flatt PR, O'harte FP, Malthouse JP, Hewage CM, J Biol Chem. 2006 Apr 18;. PMID: 16621806 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).