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Indolocarbazole natural products and reaction schemes. (A) Chemical structures of rebeccamycin, AT2433-A1, staurosporine, and K252a with standard numbering. (B) Reaction scheme for StaP/StaC mediated production of K252c from CPA, and reaction scheme for StaP/RebC mediated production of arcyriaflavin A from CPA.
