2ECK:
reference: Crystal structure of ADP/AMP complex of Escherichia coli adenylate kinase., Berry MB, Bae E, Bilderback TR, Glaser M, Phillips GN Jr, Proteins. 2006 Feb 1;62(2):555-6. PMID: 16302237

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