4C5G:
reference: Structural basis for targeting the chromatin repressor Sfmbt to Polycomb response elements., Alfieri C, Gambetta MC, Matos R, Glatt S, Sehr P, Fraterman S, Wilm M, Muller J, Muller CW, Genes Dev. 2013 Nov 1;27(21):2367-79. doi: 10.1101/gad.226621.113. PMID: 24186981

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