1PXE
Solution Structure of a CCHHC Domain of Neural Zinc Finger Factor-1
SOLUTION NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | DQF-COSY | 2.3 mM NZF-1(487-548) 2.3 mM ZnCl2 55 mM deuterated Tris | This sample was initially prepared in 100% D2O. It was then dried down and resuspended in 95% H2O/5% D2O. | no salt added | 6.95 | ambient | 293 | |
2 | 2D TOCSY | 2.3 mM NZF-1(487-548) 2.3 mM ZnCl2 55 mM deuterated Tris | This sample was initially prepared in 100% D2O. It was then dried down and resuspended in 95% H2O/5% D2O. | no salt added | 6.95 | ambient | 293 | |
3 | 2D NOESY | 2.3 mM NZF-1(487-548) 2.3 mM ZnCl2 55 mM deuterated Tris | This sample was initially prepared in 100% D2O. It was then dried down and resuspended in 95% H2O/5% D2O. | no salt added | 6.95 | ambient | 293 | |
4 | 15N_HSQC | 2.8 mM NZF-1(487-548), U-15N 2.8 mM ZnCl2 36 mM deuterated Tris | 98% H2O/2% D2O | no salt added | 7.02 | ambient | 303 | |
5 | 15N_HSQC_LongRange | 2.8 mM NZF-1(487-548), U-15N 2.8 mM ZnCl2 36 mM deuterated Tris | 98% H2O/2% D2O | no salt added | 7.02 | ambient | 303 | |
6 | 3D_HSQC-TOCSY | 2.8 mM NZF-1(487-548), U-15N 2.8 mM ZnCl2 36 mM deuterated Tris | 98% H2O/2% D2O | no salt added | 7.02 | ambient | 303 | |
7 | 3D_HSQC-NOESY | 2.8 mM NZF-1(487-548), U-15N 2.8 mM ZnCl2 36 mM deuterated Tris | 98% H2O/2% D2O | no salt added | 7.02 | ambient | 303 | |
8 | 15N_HSQC | 1.5 mM NZF-1(487-548), U-15N 1.5 mM CdCl2 (Cd-113) 36 mM deuterated Tris | D2O | no salt added | 7.00 | ambient | 303 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Varian | UNITYPLUS | 500 |
NMR Refinement | ||
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Method | Details | Software |
Torsion angle dynamics Simulated annealing | Zinc-ligand bond lengths were constrained as follows: Zn-S(Cys): 2.30 angstroms Zn-N(His): 2.00 angstroms The ligand configuration around the zinc ion was constrained to tetrahedral geometry by the following constraints: assign (resid 20 and name SG) (resid 25 and name SG) 3.76 0.20 0.20 assign (resid 20 and name SG) (resid 44 and name SG) 3.76 0.20 0.20 assign (resid 25 and name SG) (resid 44 and name SG) 3.76 0.20 0.20 assign (resid 20 and name SG) (resid 38 and name NE2) 3.52 0.20 0.20 assign (resid 25 and name SG) (resid 38 and name NE2) 3.52 0.20 0.20 assign (resid 44 and name SG) (resid 38 and name NE2) 3.52 0.20 0.20 Residues 4-63 were included in the structure calculations. | VNMR |
NMR Ensemble Information | |
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Conformer Selection Criteria | The submitted conformer models are those with the lowest energies. |
Conformers Calculated Total Number | 30 |
Conformers Submitted Total Number | 21 |
Representative Model | 1 (minimized average structure) |
Computation: NMR Software | ||||
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# | Classification | Version | Software Name | Author |
1 | collection | VNMR | 6.1b | |
2 | processing | Felix | 98 | Accelrys |
3 | data analysis | In house perl scripts | Berkovits-Cymet, H.J., Amann, B.T. | |
4 | structure solution | CNS | 1.1 | Gregory Warren, Michael Nilges, John Kuszewski, Marius Clore and Axel Brunger |
5 | refinement | CNS | 1.1 | Warren, Nilges, Kuszewski, Clore, Brunger |