1QQP:
reference: The structure and function of a foot-and-mouth disease virus-oligosaccharide receptor complex., Fry EE, Lea SM, Jackson T, Newman JW, Ellard FM, Blakemore WE, Abu-Ghazaleh R, Samuel A, King AM, Stuart DI, EMBO J 1999 Feb 1;18(3):543-54. PMID: 9927414

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