5PGM:
reference: Sulphate ions observed in the 2.12 A structure of a new crystal form of S. cerevisiae phosphoglycerate mutase provide insights into understanding the catalytic mechanism., Rigden DJ, Walter RA, Phillips SE, Fothergill-Gilmore LA, J Mol Biol. 1999 Mar 12;286(5):1507-17. PMID: 10064712

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