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. 2006 Jun;72(6):4172–4183. doi: 10.1128/AEM.00734-06

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Copyright © 2006, American Society for Microbiology

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FIG. 5. — Comparison of cyclization of the fourth ring in the biosyntheses of different aromatic polyketides. (A) Nogalamycin (56) and daunorubicin (18). (B) Steffimycin. (C) UWM6 in jadomycin and rabelomycin biosynthesis (22, 35).