5IEW
NMR Structures Show Unwinding of the GCN4p Coiled Coil Superhelix Accompanying Disruption of Ion Pairs at Acidic pH
SOLUTION NMR
NMR Experiment | ||||||||
---|---|---|---|---|---|---|---|---|
Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | 3D HNCACB | 1.5 mM [U-99% 13C; U-99% 15N] GCN4p | 90% H2O/10% D2O | 20 mM | 6.6 | 1 atm | 298 | Varian INOVA 600 |
2 | 2D 1H-15N HSQC | 1.5 mM [U-99% 13C; U-99% 15N] GCN4p | 90% H2O/10% D2O | 20 mM | 6.6 | 1 atm | 298 | Varian INOVA 600 |
3 | 3D 1H-15N NOESY | 1.5 mM [U-99% 13C; U-99% 15N] GCN4p | 90% H2O/10% D2O | 20 mM | 6.6 | 1 atm | 298 | Varian INOVA 600 |
4 | 3D 1H-13C NOESY | 1.5 mM [U-99% 13C; U-99% 15N] GCN4p | 90% H2O/10% D2O | 20 mM | 6.6 | 1 atm | 298 | Varian INOVA 600 |
5 | 3D HNCO | 1.5 mM [U-99% 13C; U-99% 15N] GCN4p | 90% H2O/10% D2O | 20 mM | 6.6 | 1 atm | 298 | Varian INOVA 600 |
6 | 3D IF 1H-13C NOESY | 1.5 mM 66%-13C 33%-12C GCN4p | 100% D2O | 20 mM | 6.6 | 1 atm | 298 | Varian VNMRS 800 |
NMR Spectrometer Information | |||
---|---|---|---|
Spectrometer | Manufacturer | Model | Field Strength |
1 | Varian | INOVA | 600 |
2 | Varian | VNMRS | 800 |
NMR Ensemble Information | |
---|---|
Conformer Selection Criteria | |
Conformers Calculated Total Number | |
Conformers Submitted Total Number | 20 |
Computation: NMR Software | ||||
---|---|---|---|---|
# | Classification | Version | Software Name | Author |
1 | processing | Felix | Accelrys Software Inc. | |
2 | chemical shift assignment | CcpNMR | CCPN | |
3 | structure calculation | X-PLOR NIH | Schwieters, Kuszewski, Tjandra and Clore | |
4 | refinement | ARIA | Linge, O'Donoghue and Nilges |