1JFH:
reference: Structure of a pancreatic alpha-amylase bound to a substrate analogue at 2.03 A resolution., Qian M, Spinelli S, Driguez H, Payan F, Protein Sci 1997 Nov;6(11):2285-96. PMID: 9385631

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).