1APS:
reference: Three-dimensional structure of acylphosphatase. Refinement and structure analysis., Pastore A, Saudek V, Ramponi G, Williams RJ, J Mol Biol 1992 Mar 20;224(2):427-40. PMID: 1313885

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