Abstract
We have characterized a linear carbonyl-conjugated polyene generated by the iterative polyketide synthase (CalE8) involved in the biosynthesis of the 10-membered enediyne core of calicheamicin. The results provide insight into the mysterious biosynthetic mechanism of the unique enediyne. The carbonyl-conjugated polyene differs from the precursor for 9-membered enediyne, suggesting that the divergence of enediyne biosynthesis starts at the PKS stage.
Published Version
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