6KXE:
reference: Structural basis for selectivity in a highly reducing type II polyketide synthase., Du D, Katsuyama Y, Horiuchi M, Fushinobu S, Chen A, Davis TD, Burkart MD, Ohnishi Y, Nat Chem Biol. 2020 May 4. pii: 10.1038/s41589-020-0530-0. doi:, 10.1038/s41589-020-0530-0. PMID: 32367018

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