| 1ZPS: reference: Crystal Structure of Methanobacterium thermoautotrophicum Phosphoribosyl-AMP Cyclohydrolase HisI(,)., Sivaraman J, Myers RS, Boju L, Sulea T, Cygler M, Davisson VJ, Schrag JD, Biochemistry 2005 Aug 2;44(30):10071-10080. PMID: 16042384 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).