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SOLUTION STRUCTURE OF SPRUCE BUDWORM ANTIFREEZE PROTEIN AT 30 DEGREES CELSIUS
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 3D_13C/15N-separated_NOESY 1: U-15N/U-13C spruce budworm antifreeze protein, 18 mg/mL, 2: U-15N spruce budworm antifreeze protein, 18 mg/mL 90% H2O, 10% D20 0 5.5 ambient 303 2 3D_15N-separated_NOESY 1: U-15N/U-13C spruce budworm antifreeze protein, 18 mg/mL, 2: U-15N spruce budworm antifreeze protein, 18 mg/mL 90% H2O, 10% D20 0 5.5 ambient 303 3 HNHA 0 5.5 ambient 303 4 HNCACB 1: U-15N/U-13C spruce budworm antifreeze protein, 18 mg/mL, 2: U-15N spruce budworm antifreeze protein, 18 mg/mL 90% H2O, 10% D20 0 5.5 ambient 303 5 CBCA(CO)NNH 1: U-15N/U-13C spruce budworm antifreeze protein, 18 mg/mL, 2: U-15N spruce budworm antifreeze protein, 18 mg/mL 90% H2O, 10% D20 0 5.5 ambient 303 6 HCCH-TOCSY 1: U-15N/U-13C spruce budworm antifreeze protein, 18 mg/mL, 2: U-15N spruce budworm antifreeze protein, 18 mg/mL 90% H2O, 10% D20 0 5.5 ambient 303 7 2D NOESY 1: U-15N/U-13C spruce budworm antifreeze protein, 18 mg/mL, 2: U-15N spruce budworm antifreeze protein, 18 mg/mL 90% H2O, 10% D20 0 5.5 ambient 303 8 3D_15N-separated_TOCSY 0 5.5 ambient 303
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Varian INOVA 500 2 Varian UNITY 600
NMR Refinement Method Details Software simulated annealing 1014 NOE-derived distance constraints,
88 dihedral angle restraints,
59 carbon chemical shift restraints X-PLOR
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 50 Conformers Submitted Total Number 20 Representative Model 10 (closest to the average)
Additional NMR Experimental Information Details The structure was determined using triple-resonance NMR spectroscopy.
Computation: NMR Software # Classification Version Software Name Author 1 structure solution X-PLOR 3.851 Brunger 2 processing NMRPipe 1.7 Delaglio 3 data analysis PIPP 4.2 Garrett 4 refinement X-PLOR 3.851 Brunger