1KEZ:
reference: Crystal structure of the macrocycle-forming thioesterase domain of the erythromycin polyketide synthase: versatility from a unique substrate channel., Tsai SC, Miercke LJ, Krucinski J, Gokhale R, Chen JC, Foster PG, Cane DE, Khosla C, Stroud RM, Proc Natl Acad Sci U S A 2001 Dec 18;98(26):14808-13. PMID: 11752428

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