2LFS

Solution structure of the chimeric Af1503 HAMP- EnvZ DHp homodimer; A219F variant

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D HNCO	0.6 MM [U-100% 13C U-100% 15N] HAMP-DHPF, 12 MM PHOSPHATE BUFFER, 138 MM SODIUM CHLORIDE	90% H2O/10% D2O	0.150	7.1	AMBIENT	308
2	3D HNCA	0.6 MM [U-100% 13C U-100% 15N] HAMP-DHPF, 12 MM PHOSPHATE BUFFER, 138 MM SODIUM CHLORIDE	90% H2O/10% D2O	0.150	7.1	AMBIENT	308
3	3D CBCA(CO)NH	0.6 MM [U-100% 13C U-100% 15N] HAMP-DHPF, 12 MM PHOSPHATE BUFFER, 138 MM SODIUM CHLORIDE	90% H2O/10% D2O	0.150	7.1	AMBIENT	308
4	3D CCH-TOCSY	0.6 MM [U-100% 13C U-100% 15N] HAMP-DHPF, 12 MM PHOSPHATE BUFFER, 138 MM SODIUM CHLORIDE	90% H2O/10% D2O	0.150	7.1	AMBIENT	308
5	3D 1H-15N NOESY	0.6 MM [U-100% 15N] HAMP-DHPF, 12 MM PHOSPHATE BUFFER, 138 MM SODIUM CHLORIDE	90% H2O/10% D2O	0.150	7.1	AMBIENT	308
6	3D NNH NOESY	0.6 MM [U-100% 15N] HAMP-DHPF, 12 MM PHOSPHATE BUFFER, 138 MM SODIUM CHLORIDE	90% H2O/10% D2O	0.150	7.1	AMBIENT	308
7	3D 1H-13C NOESY	0.6 MM [U-100% 13C U-100% 15N] HAMP-DHPF, 12 MM PHOSPHATE BUFFER, 138 MM SODIUM CHLORIDE	90% H2O/10% D2O	0.150	7.1	AMBIENT	308
8	3D CNH NOESY	0.6 MM [U-100% 13C U-100% 15N] HAMP-DHPF, 12 MM PHOSPHATE BUFFER, 138 MM SODIUM CHLORIDE	90% H2O/10% D2O	0.150	7.1	AMBIENT	308
9	3D CCH NOESY	0.6 MM [U-100% 13C U-100% 15N] HAMP-DHPF, 12 MM PHOSPHATE BUFFER, 138 MM SODIUM CHLORIDE	90% H2O/10% D2O	0.150	7.1	AMBIENT	308
10	2D 12C FILTERED/13C EDITED NOESY	0.6 MM [U-100% 13C U-100% 15N] HAMP-DHPF, 12 MM PHOSPHATE BUFFER, 138 MM SODIUM CHLORIDE	90% H2O/10% D2O	0.150	7.1	AMBIENT	308
11	2D 12C/14N FILTERED 1H-1H NOESY	0.6 MM [U-100% 15N] HAMP-DHPF, 12 MM PHOSPHATE BUFFER, 138 MM SODIUM CHLORIDE	90% H2O/10% D2O	0.150	7.1	AMBIENT	308
12	2D 1H-15N TROSY	0.6 MM [U-100% 15N] HAMP-DHPF, 12 MM PHOSPHATE BUFFER, 138 MM SODIUM CHLORIDE	90% H2O/10% D2O	0.150	7.1	AMBIENT	308
13	2D 1H-15N ANTITROSY	0.6 MM [U-100% 15N] HAMP-DHPF, 12 MM PHOSPHATE BUFFER, 138 MM SODIUM CHLORIDE	90% H2O/10% D2O	0.150	7.1	AMBIENT	308

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	600
2	Bruker	AVANCE III	800
3	Bruker	AVANCE	900

NMR Refinement
Method	Details	Software
simulated annealing	NON-BONDED POTENTIAL SUPPLEMENTED WITH CONFORMATIONAL DATABASE POTENTIAL	X-PLOR NIH

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations
Conformers Calculated Total Number	50
Conformers Submitted Total Number	19
Representative Model	1 (minimized average structure)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	X-PLOR NIH	2.21	Schwieters, Kuszewski, Tjandra and Clore
2	collection	TopSpin		Bruker Biospin
3	data analysis	Sparky		Goddard
4	structure solution	X-PLOR NIH	2.21	Schwieters, Kuszewski, Tjandra and Clore
5	processing	TopSpin		Bruker Biospin