5WGC:
reference: An Oxetane-Based Polyketide Surrogate To Probe Substrate Binding in a Polyketide Synthase., Ellis BD, Milligan JC, White AR, Duong V, Altman PX, Mohammed LY, Crump MP, Crosby J, Luo R, Vanderwal CD, Tsai SC, J Am Chem Soc. 2018 Apr 10. doi: 10.1021/jacs.7b11793. PMID: 29620883

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