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. Author manuscript; available in PMC: 2011 Jul 1.
Published in final edited form as: Arch Biochem Biophys. 2010 Sep 18;505(1):13–21. doi: 10.1016/j.abb.2010.09.012

Figure 3.

Figure 3

(A) Two proposed mechanisms for the HEPD reaction. (B) The substrate analog 1-HEP is converted to acetylphosphate by HEPD. (C) Two proposed mechanisms for the HppE reaction. The phosphonate groups are shown as dianionic but could be monoprotonated. L = undefined ligand, probably water or hydroxide.