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. Author manuscript; available in PMC: 2008 Sep 18.
Published in final edited form as: J Am Chem Soc. 2007 Aug 10;129(35):10732–10740. doi: 10.1021/ja071199j

Figure 1.

Figure 1

Model and sequence of Porphyrin Assemblers. (a) Iron diphenylporphyrin cofactor (b) Model of PATET 8 (c) Model of PASC (d) Sequences of PATET and PASC, which have the helical regions underlined, and the heptad positions of the residues are lettered. Keystone residues are bolded.