1PMI:
reference: The x-ray crystal structure of phosphomannose isomerase from Candida albicans at 1.7 angstrom resolution., Cleasby A, Wonacott A, Skarzynski T, Hubbard RE, Davies GJ, Proudfoot AE, Bernard AR, Payton MA, Wells TN, Nat Struct Biol 1996 May;3(5):470-9. PMID: 8612079

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