2Z2R:
reference: A beta-hairpin comprising the nuclear localization sequence sustains the self-associated states of nucleosome assembly protein 1., Park YJ, McBryant SJ, Luger K, J Mol Biol. 2008 Jan 25;375(4):1076-85. Epub 2007 Nov 19. PMID: 18068721

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