5.3.3.2 - 660922 5.3.3.2 comparison of orthorhombic, monoclinic and trigonal crystal forms, up to 2.2 A resolution. Crystallization of free enzyme and in complex wih transition-state analogue N,N-dimethyl-2-amino-1-ethyl diphosphate 690288 5.3.3.2 crystal structure of free and metal-bound C67A mutant enzyme 650979 5.3.3.2 crystal structure of the isomerase-bromohydrin complex 651594 5.3.3.2 crystallized at 20°C using the hanging-drop vapor diffusion method with a reservoir solution containing 0.1 M Tris-HCl (pH 8.0), 0.2 M sodium citrate, and 30% (vol/vol) polyethylene glycol 400 (PEG 400) 719740 5.3.3.2 crystallographic investigation of phosphoantigen binding 661948 5.3.3.2 crystals soaked with transition state analogue (N,N-dimethylamino)-1-ethyl diphosphate 680346 5.3.3.2 enzyme shows a flexible N-terminal alpha-helix covering the active pocket and blocking the entrance. Substrate binding induces conformational change in the active site. A water molecule is the direct proton donor for the substrate 681412 5.3.3.2 hanging drop vapor diffusion method, crystal structure of the C67A mutant of isopentenyl diphosphate isomerase complexed with the mechanism-based irreversible inhibitor 3,4-epoxy-3-methyl-1-butyl diphosphate 653840 5.3.3.2 hanging drop vapor diffusion method, crystal structures of complexes with transition state analogue N,N-dimethyl-2-amino-1-ethyl diphosphate and the covalently attached irreversible inhibitors 3,4-epoxy-3-methyl-1-butyl diphosphate at 1.96 A resolution 652367