2UXG:
reference: Influence of Loop Shortening on the Metal Binding Site of Cupredoxin Pseudoazurin(,)., Velarde M, Huber R, Yanagisawa S, Dennison C, Messerschmidt A, Biochemistry. 2007 Aug 9;. PMID: 17685636

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