2C1S:
reference: Structure and characterization of a novel chicken biotin-binding protein A (BBP-A)., Hytonen VP, Maatta JA, Niskanen EA, Huuskonen J, Helttunen KJ, Halling KK, Nordlund HR, Rissanen K, Johnson MS, Salminen TA, Kulomaa MS, Laitinen OH, Airenne TT, BMC Struct Biol. 2007 Mar 7;7:8. PMID: 17343730

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