2B87:
reference: Structural basis for molecular recognition in an affibody:affibody complex., Lendel C, Dogan J, Hard T, J Mol Biol. 2006 Jun 23;359(5):1293-304. Epub 2006 May 6. PMID: 16750222

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