3ELX:
reference: The X-Ray structure of zebrafish (Danio rerio) ileal bile acid-binding protein reveals the presence of binding sites on the surface of the protein molecule., Capaldi S, Saccomani G, Fessas D, Signorelli M, Perduca M, Monaco HL, J Mol Biol. 2009 Jan 9;385(1):99-116. Epub 2008 Oct 14. PMID: 18952094

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