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. Author manuscript; available in PMC: 2008 Sep 9.
Published in final edited form as: J Am Chem Soc. 2006 Mar 8;128(9):3067–3074. doi: 10.1021/ja058093d

Figure 3.

Figure 3

The deconstructed module system: chain elongation performed by [KS][AT] didomain and standalone ACP. Non-cognate nucleophile can also be introduced via acyl phosphopantetheinylation of apo-ACPs catalyzed by Sfp enzyme.