4NJ2:
reference: Tuning assembly size in Peptide-based supramolecular polymers by modulation of subunit association affinity., Oshaben KM, Horne WS, Biomacromolecules. 2014 Apr 14;15(4):1436-42. doi: 10.1021/bm5000423. Epub 2014, Mar 17. PMID: 24598042

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