摘要:
In aqueous solution, azaquinolone inhibitors bind to prolyl 4-hydroxylase in two different orientations, as first detected by (19)F spectroscopy. This contrasts with the crystallographic structure where only one orientation has been determined. Dissection of the metal binding properties of the enzyme allowed structures of both complexes to be obtained in solution from (19)F and (13)C dipolar shifts in a labeled ligand.