2ERB:
reference: The crystal structure of an odorant binding protein from Anopheles gambiae: Evidence for a common ligand release mechanism., Wogulis M, Morgan T, Ishida Y, Leal WS, Wilson DK, Biochem Biophys Res Commun 2006 Jan 6;339(1):157-64. Epub 2005 Nov 9. PMID: 16300742

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