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Solution Structure of 3,4-Dihydroxy-2-Butanone 4-Phosphate Synthase of Riboflavin Biosynthesis
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D NOESY 2mM DHBPS U-15N,13C, 50mmol NaPO4, pH 6, 10%D2O, 90%H20 50mM NaPO4 6.0 1 atm 313 2 3D_13C-separated_NOESY 2mM DHBPS U-15N,13C, 50mmol NaPO4, pH 6, 10%D2O, 90%H20 50mM NaPO4 6.0 1 atm 313 3 3D_15N-separated_NOESY 2mM DHBPS U-15N,13C, 50mmol NaPO4, pH 6, 10%D2O, 90%H20 50mM NaPO4 6.0 1 atm 313 4 DQF-COSY 2mM DHBPS U-15N,13C, 50mmol NaPO4, pH 6, 10%D2O, 90%H20 50mM NaPO4 6.0 1 atm 313
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVANCE 750
NMR Refinement Method Details Software simulated annealing 730 NOE-derived distance constraints,
230 dihedral angle restraints,
40 distance restraints from hydrogen bonds ANSIG
NMR Ensemble Information Conformer Selection Criteria structures with the least restraint violations,structures with the lowest energy Conformers Calculated Total Number 200 Conformers Submitted Total Number 10 Representative Model 1 (lowest energy)
Computation: NMR Software # Classification Version Software Name Author 1 data analysis ANSIG 3.0 Kraulis 2 processing Azara 3.3 Boucher 3 structure solution X-PLOR 3.1 Brunger 4 refinement X-PLOR 3.1 Brunger