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RDC-derived models of the zinc ribbon domain of human general transcription factor TFIIB (zinc free structures)
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D 1H-15N HSQC 0.6mM TFIIB Uniform labeling with 15N: U-98% 15N, 20mM [2H4]-imidazole hydrochloride, 5% glycerol and 20mM sodium sulfate at pH 6.5 95% H2O/5% D2O 6.5 ambient 298 2 2D 1H-15N IPAP HSQC 0.6mM TFIIB Uniform labeling with 15N: U-98% 15N, 20mM [2H4]-imidazole hydrochloride, 5% glycerol and 20mM sodium sulfate at pH 6.5, 12mg/mL of filamentous phage, Pf1 95% H2O/5% D2O 6.5 ambient 298
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Varian INOVA 600
NMR Refinement Method Details Software simulated annealing the structures are based on a total of 465 restraints, 443 are distance constraints, 22 1H-15N RDC restraints VNMR
NMR Ensemble Information Conformer Selection Criteria structures with the least restraint violations, structures with the lowest energy Conformers Calculated Total Number 35 Conformers Submitted Total Number 35
Computation: NMR Software # Classification Version Software Name Author 1 collection VNMR 6.1C Varian 2 processing NMRPipe 2.1 Frank Delaglio 3 data analysis NMRView 5.0 Bruce A. Johnson 4 structure solution CNS 1.1 Brunger 5 refinement CNS 1.1 Brunger