3SLK:
reference: Divergence of multimodular polyketide synthases revealed by a didomain structure., Zheng J, Gay DC, Demeler B, White MA, Keatinge-Clay AT, Nat Chem Biol. 2012 May 27. doi: 10.1038/nchembio.964. PMID: 22634636

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