6PVR

Influenza B M2 Proton Channel in the Closed State - SSNMR Structure at pH 7.5

SOLID-STATE NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D CORD	0.26 mg/uL [U-13C; U-15N] Influenza B M2 Proton Channel, 0.48 mg/uL POPE	aqueous buffer	20 mM	7.5	1 atm	285	Bruker AVANCE II 800
2	2D NC TEDOR	0.26 mg/uL [U-13C; U-15N] Influenza B M2 Proton Channel, 0.48 mg/uL POPE	aqueous buffer	20 mM	7.5	1 atm	285	Bruker AVANCE II 800
3	3D NCCX TEDOR-CORD	0.26 mg/uL [U-13C; U-15N] Influenza B M2 Proton Channel, 0.48 mg/uL POPE	aqueous buffer	20 mM	7.5	1 atm	285	Bruker AVANCE II 800
4	3D CCC CORD-CORD	0.26 mg/uL [U-13C; U-15N] Influenza B M2 Proton Channel, 0.48 mg/uL POPE	aqueous buffer	20 mM	7.5	1 atm	285	Bruker AVANCE II 800
5	2D NC NH-DIPSHIFT	0.26 mg/uL [U-13C; U-15N] Influenza B M2 Proton Channel, 0.48 mg/uL POPE	aqueous buffer	20 mM	7.5	1 atm	285	Bruker AVANCE II 800
6	2D CC Water-edited	0.26 mg/uL [U-13C; U-15N] Influenza B M2 Proton Channel, 0.48 mg/uL POPE	aqueous buffer	20 mM	7.5	1 atm	285	Bruker AVANCE II 800
7	1D 13C-19F REDOR	0.13 mg/uL [U-13C; U-15N] and 4-19F-F5, 4-19F-F20 Influenza B M2 Proton Channel, 0.39 mg/uL POPE	aqueous buffer	20 mM	7.5	1 atm	285	Bruker AVANCE III 600

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE II	800
2	Bruker	AVANCE III	600

NMR Refinement
Method	Details	Software
simulated annealing		X-PLOR NIH

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	120
Conformers Submitted Total Number	10
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	X-PLOR NIH	2.47	Schwieters, Kuszewski, Tjandra and Clore
2	structure calculation	X-PLOR NIH	2.47	Schwieters, Kuszewski, Tjandra and Clore
3	chemical shift assignment	Sparky	3.1	Goddard
4	peak picking	Sparky	3.1	Goddard
5	processing	TopSpin	2.1-3.6	Bruker Biospin