2LRU

Solution Structure of the WNK1 Autoinhibitory Domain

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	0.65 mM [U-100% 13C; U-100% 15N] WNKAI	90% H2O/10% D2O	0.010	6.5	ambient	308
2	3D HCCH-TOCSY	0.65 mM [U-100% 13C; U-100% 15N] WNKAI	90% H2O/10% D2O	0.010	6.5	ambient	308
3	3D CBCA(CO)NH	0.65 mM [U-100% 13C; U-100% 15N] WNKAI	90% H2O/10% D2O	0.010	6.5	ambient	308
4	3D HNCO	0.65 mM [U-100% 13C; U-100% 15N] WNKAI	90% H2O/10% D2O	0.010	6.5	ambient	308
5	3D HNCACB	0.65 mM [U-100% 13C; U-100% 15N] WNKAI	90% H2O/10% D2O	0.010	6.5	ambient	308
6	3D H(CCO)NH	0.65 mM [U-100% 13C; U-100% 15N] WNKAI	90% H2O/10% D2O	0.010	6.5	ambient	308
7	3D C(CO)NH	0.65 mM [U-100% 13C; U-100% 15N] WNKAI	90% H2O/10% D2O	0.010	6.5	ambient	308
8	3D 1H-15N NOESY	0.65 mM [U-100% 13C; U-100% 15N] WNKAI	90% H2O/10% D2O	0.010	6.5	ambient	308
9	3D 1H-13C NOESY	0.65 mM [U-100% 13C; U-100% 15N] WNKAI	90% H2O/10% D2O	0.010	6.5	ambient	308

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	800

NMR Refinement
Method	Details	Software
torsion angle dynamics, simulated annealing	The authors state that two protons (TYR516 hydroxyl, CYS 547 backbone amide) are clashing in 1 model of the 20, and are close in 6/20. While we have not been able to directly assign the chemical shifts of that hydroxyl proton given the difficulties of exchange at this site, we believe that our existing NMR data are consistent with arrangement indicating a likely H-bond between the CYS 547 amide proton and TYR 516 hydroxyl oxygen.	NMRView

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	500
Conformers Submitted Total Number	20
Representative Model	1 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	chemical shift assignment	NMRView		Johnson, One Moon Scientific
2	data analysis	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
3	structure solution	ARIA		Linge, O'Donoghue and Nilges
4	refinement	ARIA		Linge, O'Donoghue and Nilges