6F7W:
reference: Cucurbit[7]uril-Dimethyllysine Recognition in a Model Protein., Guagnini F, Antonik PM, Rennie ML, O'Byrne P, Khan AR, Pinalli R, Dalcanale E, Crowley PB, Angew Chem Int Ed Engl. 2018 Apr 19. doi: 10.1002/anie.201803232. PMID: 29673020

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