1POH:
reference: The 2.0-A resolution structure of Escherichia coli histidine-containing phosphocarrier protein HPr. A redetermination., Jia Z, Quail JW, Waygood EB, Delbaere LT, J Biol Chem 1993 Oct 25;268(30):22490-501. PMID: 8226757

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