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modeling of structure and docking analysis of substrate, Zn2+ and NAD+. Cys 37, His 58, Glu 59, Glu 142 residues form an active site pocket similar to known GPDH. A catalytic Zn2+-binding domain and a cofactor NAD+-binding domain with strong hydrogen bonding contacts with the substrate and the cofactor are identified
structures of open state with Zn2+ in the catalytic site and of the closed state in complex with the polyols Tris and glycerol, respectively. The closed state reveals no bound cofactor. The glycerol binding mode reveals a pentacoordinated zinc ion in complex with a polyol and also a strong hydrogen bond between the primary hydroxyl group and the conserved Glu144