4OFI:
reference: Extracellular Architecture of the SYG-1/SYG-2 Adhesion Complex Instructs Synaptogenesis., Ozkan E, Chia PH, Wang RR, Goriatcheva N, Borek D, Otwinowski Z, Walz T, Shen K, Garcia KC, Cell. 2014 Jan 30;156(3):482-94. doi: 10.1016/j.cell.2014.01.004. PMID: 24485456

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