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DynE8 makes 2, which is proposed to form the dynemicin enediyne and anthraquinone in the presence of accessory enzymes, and heptaene 1 in the presence of its native TE, DynE7. Intact acetate units are indicated in bold, and the carbonyl carbons of acetate are indicated with black dots. Asterisks in 3 indicate atoms originating from molecular oxygen. Numbering for 3 is presented in Fig. 1a.
