2HIG:
reference: The First Crystal Structure of Phosphofructokinase from a Eukaryote: Trypanosoma brucei., Martinez-Oyanedel J, McNae IW, Nowicki MW, Keillor JW, Michels PA, Fothergill-Gilmore LA, Walkinshaw MD, J Mol Biol. 2007 Mar 2;366(4):1185-1198. Epub 2006 Oct 11. PMID: 17207816

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