2JAB:
reference: A designed ankyrin repeat protein evolved to picomolar affinity to Her2., Zahnd C, Wyler E, Schwenk JM, Steiner D, Lawrence MC, McKern NM, Pecorari F, Ward CW, Joos TO, Pluckthun A, J Mol Biol. 2007 Jun 15;369(4):1015-28. Epub 2007 Mar 20. PMID: 17466328

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