5E0U: Human Pcna Variant (S228i) Complexed With P21 At 1.9 Angstro
reference: A Disease-Causing Variant in PCNA Disrupts a Promiscuous Protein Binding Site., Duffy CM, Hilbert BJ, Kelch BA, J Mol Biol. 2016 Mar 27;428(6):1023-40. doi: 10.1016/j.jmb.2015.11.029. Epub 2015, Dec 11. PMID: 26688547

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