5IIR
NMR Structures Show Unwinding of the GCN4p Coiled Coil Superhelix Accompanying Disruption of Ion Pairs at Acidic pH
SOLUTION NMR
NMR Experiment | ||||||||
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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 | 4.4 | 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 | 4.4 | 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 | 4.4 | 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 | 4.4 | 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 | 4.4 | 1 atm | 298 | Varian INOVA 600 |
6 | 2D 1H-15N HSQC | 1.5 mM [U-99% 13C; U-99% 15N] GCN4p | 100% D2O | 20 mM | 4.6 | 1 atm | 283 | Varian INOVA 600 |
7 | 2D 15N NOESY | 1.5 mM [U-99% 13C; U-99% 15N] GCN4p | 90% H2O/10% D2O | 20 mM | 4.4 | 1 atm | 298 | Varian INOVA 600 |
8 | 3D IF 1H-13CNOESY | 1.5 mM 66% - 13C 33% - 12C GCN4p | 100% D2O | 20 mM | 4.4 | 1 atm | 298 | Varian VNMRS 800 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Varian | INOVA | 600 |
2 | Varian | VNMRS | 800 |
NMR Refinement | ||
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Method | Details | Software |
DGSA-distance geometry simulated annealing | X-PLOR NIH |
NMR Ensemble Information | |
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Conformer Selection Criteria | structures with the lowest energy |
Conformers Calculated Total Number | 350 |
Conformers Submitted Total Number | 20 |
Representative Model | 1 (n/a) |
Computation: NMR Software | ||||
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# | 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 |