Title : Isomorphous crystal structures of Escherichia coli dihydrofolate reductase complexed with folate, 5-deazafolate, and 5,10-dideazatetrahydrofolate: mechanistic implications.

Pub. Date : 1995 Feb 28

PMID : 7873554






1 Functional Relationships(s)
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1 When the ecDHFR.NADPH complex (space group P3221; M. R. Sawaya, in preparation) is superimposed on the folate and 5dfol complexes, the distances from pteridine C6 to nicotinamide C4 were found to be 2.9 and 2.8 A, respectively, in close agreement with the theoretically calculated optimal distance in the transition state for hydride transfer [Wu, Y. D., & Houk, K. N. (1987) J. NADP dihydrofolate reductase Escherichia coli