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. Author manuscript; available in PMC: 2018 Nov 29.
Published in final edited form as: Methods Enzymol. 2018 Jun 1;606:485–522. doi: 10.1016/bs.mie.2018.04.014

Fig. 2.

Fig. 2

Proposed models for the pyranopterin ring formation catalyzed by MoaA and MoaC during the Moco biosynthesis. (A) Pyranopterin triphosphate as the MoaA product and (B) 3′,8-cH2GTP as the MoaA product.