4JNH:
reference: A Unique Spumavirus Gag N-terminal Domain with Functional Properties of Orthoretroviral Matrix and Capsid., Goldstone DC, Flower TG, Ball NJ, Sanz-Ramos M, Yap MW, Ogrodowicz RW, Stanke N, Reh J, Lindemann D, Stoye JP, Taylor IA, PLoS Pathog. 2013 May;9(5):e1003376. doi: 10.1371/journal.ppat.1003376. Epub 2013, May 9. PMID: 23675305

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