5KP5:
reference: Anatomy of the beta-branching enzyme of polyketide biosynthesis and its interaction with an acyl-ACP substrate., Maloney FP, Gerwick L, Gerwick WH, Sherman DH, Smith JL, Proc Natl Acad Sci U S A. 2016 Aug 29. pii: 201607210. PMID: 27573844

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