3F5M:
reference: The crystal structure of ATP-bound phosphofructokinase from Trypanosoma brucei reveals conformational transitions different from those of other phosphofructokinases., McNae IW, Martinez-Oyanedel J, Keillor JW, Michels PA, Fothergill-Gilmore LA, Walkinshaw MD, J Mol Biol. 2009 Feb 6;385(5):1519-33. Epub 2008 Dec 3. PMID: 19084537

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