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Proposed assembly-line biosynthesis of didemnin. Biosynthetic domains are denoted as: C = condensation, A = adenylation, T = Thiolation, KR = ketoreductase, MT = methyltransferase, E = epimerization, KS = ketosynthase, TE = thioesterase. The amino acid selectivity of each adenylation domain is written above the domain.
