5MLC:
reference: Cryo-EM structure of the spinach chloroplast ribosome reveals the location of plastid-specific ribosomal proteins and extensions., Graf M, Arenz S, Huter P, Donhofer A, Novacek J, Wilson DN, Nucleic Acids Res. 2016 Dec 15. pii: gkw1272. PMID: 27986857

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