Experiment: 1Y32

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	NMR studies of humanin were carried out in H2O/TFE-d3 7:3 solution containing 60 microM NaN3 at 280 and 298 K. The concentration of the sample was 1.7 mM and the pH of the solution was 2.7 (uncorrected for the presence of TFE).	H2O/TFE-d3 7:3 solution containing 60 microM NaN3	60 microM sodium azide	2.7	ambient	298
2	2D TOCSY	NMR studies of humanin were carried out in H2O/TFE-d3 7:3 solution containing 60 microM NaN3 at 280 and 298 K. The concentration of the sample was 1.7 mM and the pH of the solution was 2.7 (uncorrected for the presence of TFE).	H2O/TFE-d3 7:3 solution containing 60 microM NaN3	60 microM sodium azide	2.7	ambient	298
3	2D NOESY	NMR studies of humanin were carried out in H2O/TFE-d3 7:3 solution containing 60 microM NaN3 at 280 and 298 K. The concentration of the sample was 1.7 mM and the pH of the solution was 2.7 (uncorrected for the presence of TFE).	H2O/TFE-d3 7:3 solution containing 60 microM NaN3	60 microM sodium azide	2.7	ambient	280
4	2D TOCSY	NMR studies of humanin were carried out in H2O/TFE-d3 7:3 solution containing 60 microM NaN3 at 280 and 298 K. The concentration of the sample was 1.7 mM and the pH of the solution was 2.7 (uncorrected for the presence of TFE).	H2O/TFE-d3 7:3 solution containing 60 microM NaN3	60 microM sodium azide	2.7	ambient	280

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	500

NMR Refinement
Method	Details	Software
simulated annealing torsion angle dynamics		XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	300
Conformers Submitted Total Number	14
Representative Model	1 (closest to the average)

Additional NMR Experimental Information
Details	This structure was determined using standard 2D homonuclear techniques.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	2.6	Bruker
2	processing	XwinNMR	2.6	Bruker
3	data analysis	Sparky	3	Goddard
4	structure solution	CNS	1.1	Brunger
5	refinement	CNS	1.1	Brunger

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.