4EBY:
reference: Chitin-induced dimerization activates a plant immune receptor., Liu T, Liu Z, Song C, Hu Y, Han Z, She J, Fan F, Wang J, Jin C, Chang J, Zhou JM, Chai J, Science. 2012 Jun 1;336(6085):1160-4. PMID: 22654057

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