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NMR Structures Show Unwinding of the GCN4p Coiled Coil Superhelix Accompanying Disruption of Ion Pairs at Acidic pH


SOLUTION NMR
NMR Experiment
ExperimentTypeSample ContentsSolventIonic StrengthpHPressureTemperature (K)Spectrometer
13D HNCACB1.5 mM [U-99% 13C; U-99% 15N] GCN4p90% H2O/10% D2O20 mM6.61 atm298Varian INOVA 600
22D 1H-15N HSQC1.5 mM [U-99% 13C; U-99% 15N] GCN4p90% H2O/10% D2O20 mM6.61 atm298Varian INOVA 600
33D 1H-15N NOESY1.5 mM [U-99% 13C; U-99% 15N] GCN4p90% H2O/10% D2O20 mM6.61 atm298Varian INOVA 600
43D 1H-13C NOESY1.5 mM [U-99% 13C; U-99% 15N] GCN4p90% H2O/10% D2O20 mM6.61 atm298Varian INOVA 600
53D HNCO1.5 mM [U-99% 13C; U-99% 15N] GCN4p90% H2O/10% D2O20 mM6.61 atm298Varian INOVA 600
63D IF 1H-13C NOESY1.5 mM 66%-13C 33%-12C GCN4p100% D2O20 mM6.61 atm298Varian VNMRS 800
NMR Spectrometer Information
SpectrometerManufacturerModelField Strength
1VarianINOVA600
2VarianVNMRS800
NMR Ensemble Information
Conformer Selection Criteria
Conformers Calculated Total Number
Conformers Submitted Total Number20
Computation: NMR Software
#ClassificationVersionSoftware NameAuthor
1processingFelixAccelrys Software Inc.
2chemical shift assignmentCcpNMRCCPN
3structure calculationX-PLOR NIHSchwieters, Kuszewski, Tjandra and Clore
4refinementARIALinge, O'Donoghue and Nilges