5VG9:
reference: Atomic structure of the eukaryotic intramembrane RAS methyltransferase ICMT., Diver MM, Pedi L, Koide A, Koide S, Long SB, Nature. 2018 Jan 25;553(7689):526-529. doi: 10.1038/nature25439. Epub 2018 Jan, 17. PMID: 29342140

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