4LPX:
reference: C-Terminal beta-strand swapping in a consensus derived fibronectin type III scaffold., Teplyakov A, Obmolova G, Malia TJ, Luo J, Jacobs SA, Chan W, Domingo D, Baker A, O'Neil KT, Gilliland GL, Proteins. 2013 Dec 23. doi: 10.1002/prot.24502. PMID: 24375666

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