6JGI:
reference: Subatomic resolution X-ray structures of green fluorescent protein., Takaba K, Tai Y, Eki H, Dao HA, Hanazono Y, Hasegawa K, Miki K, Takeda K, IUCrJ. 2019 Apr 3;6(Pt 3):387-400. doi: 10.1107/S205225251900246X. eCollection, 2019 May 1. PMID: 31098020

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