3NSW:
reference: Ancylostoma ceylanicum excretory-secretory protein 2 adopts a netrin-like fold and defines a novel family of nematode proteins., Kucera K, Harrison LM, Cappello M, Modis Y, J Mol Biol. 2011 Apr 22;408(1):9-17. Epub 2011 Feb 23. PMID: 21352830

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