3RGA:
reference: Enzymatic catalysis of anti-Baldwin ring closure in polyether biosynthesis., Hotta K, Chen X, Paton RS, Minami A, Li H, Swaminathan K, Mathews II, Watanabe K, Oikawa H, Houk KN, Kim CY, Nature. 2012 Mar 4;483(7389):355-8. doi: 10.1038/nature10865. PMID: 22388816

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