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. Author manuscript; available in PMC: 2011 Jul 6.
Published in final edited form as: Curr Opin Struct Biol. 2003 Dec;13(6):716–721. doi: 10.1016/j.sbi.2003.10.011

Figure 5.

Figure 5

Schematic representation of the disposition of the cis-ethanesemidione radical and Co2+ of cob(II)alamin in the active site of DDH. The radical is generated from the suicide inactivator glycolaldehyde. The position of the radical relative to Co2+ was determined from the electron spin–spin splitting in the EPR spectra of the coupled pair [11].