5HBN:
reference: Arginine phosphorylation marks proteins for degradation by a Clp protease., Trentini DB, Suskiewicz MJ, Heuck A, Kurzbauer R, Deszcz L, Mechtler K, Clausen T, Nature. 2016 Oct 6. doi: 10.1038/nature20122. PMID: 27749819

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