4K5B:
reference: Co-crystallization with conformation-specific designed ankyrin repeat proteins explains the conformational flexibility of BCL-W., Schilling J, Schoppe J, Sauer E, Pluckthun A, J Mol Biol. 2014 Apr 17. pii: S0022-2836(14)00194-6. doi:, 10.1016/j.jmb.2014.04.010. PMID: 24747052

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