2B8E:
reference: Structure of the ATP Binding Domain from the Archaeoglobus fulgidus Cu+-ATPase., Sazinsky MH, Mandal AK, Arguello JM, Rosenzweig AC, J Biol Chem. 2006 Apr 21;281(16):11161-6. Epub 2006 Feb 22. PMID: 16495228

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