Experiment: 6B3U

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D HNCO	500 uM [U-100% 13C; U-100% 15N; U-100% 2H] HIV-1 GP41 Transmembrane domain	93% H2O/7% D2O	25 mM	6.5	1 bar	318	Bruker AVANCE II 900
2	3D HNCA	500 uM [U-100% 13C; U-100% 15N; U-100% 2H] HIV-1 GP41 Transmembrane domain	93% H2O/7% D2O	25 mM	6.5	1 bar	318	Bruker AVANCE II 900
3	3D 1H-15N NOESY	500 uM [U-100% 13C; U-100% 15N; U-100% 2H] HIV-1 GP41 Transmembrane domain	93% H2O/7% D2O	25 mM	6.5	1 bar	318	Bruker AVANCE II 900
4	2D TROSY	500 uM [U-100% 13C; U-100% 15N; U-100% 2H] HIV-1 GP41 Transmembrane domain	93% H2O/7% D2O	25 mM	6.5	1 bar	318	Bruker AVANCE II 900
5	2D ARTSY	500 uM [U-100% 13C; U-100% 15N; U-100% 2H] HIV-1 GP41 Transmembrane domain	93% H2O/7% D2O	25 mM	6.5	1 bar	318	Bruker AVANCE II 900
6	2D ARTSY	100 uM [U-100% 15N; 80%-2H] HIV-1 GP41 Transmembrane domain	93% H2O/7% D2O	25 mM	6.5	1 bar	318	Bruker AVANCE II 900
7	2D ARTSY	100 uM [U-100% 15N; 80%-2H] HIV-1 GP41 Transmembrane domain	93% H2O/7% D2O	25 mM	6.5	1 bar	318	Bruker AVANCE II 900
8	2D ARTSY	40 uM [U-100% 15N; U-80% 2H] HIV-1 GP41 Transmembrane domain	93% H2O/7% D2O	25 mM	6.5	1 bar	318	Bruker AVANCE III 800
9	2D ARTSY	70 uM [U-100% 15N; U-80% 2H] HIV-1 GP41 Transmembrane domain	93% H2O/7% D2O	25 mM	6.5	1 bar	318	Bruker AVANCE III 800
10	2D TROSY	300 uM [U-100% 15N; U-80% 2H] HIV-1 GP41 Transmembrane domain	93% H2O/7% D2O	25 mM	6.5	1 bar	318	Bruker AVANCE III 800

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

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	60
Conformers Submitted Total Number	15
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	chemical shift assignment	CcpNMR		CCPN
3	structure calculation	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
4	data analysis	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
2	refinement	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.