2XWX:
reference: The Vibrio cholerae colonization factor GbpA possesses a modular structure that governs binding to different host surfaces., Wong E, Vaaje-Kolstad G, Ghosh A, Hurtado-Guerrero R, Konarev PV, Ibrahim AF, Svergun DI, Eijsink VG, Chatterjee NS, van Aalten DM, PLoS Pathog. 2012 Jan;8(1):e1002373. Epub 2012 Jan 12. PMID: 22253590

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