1EWS

THE THREE-DIMENSIONAL SOLUTION STRUCTURE OF THE RABBIT KIDNEY DEFENSIN, RK-1

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	DQF-COSY	1.5 mM RK1	90% H2O/10% D2O		3.5	ambient	308
2	2D NOESY	1.5 mM RK1	90% H2O/10% D2O		3.5	ambient	308
3	E-COSY	1.5 mM RK1	100% D2O		3.5	ambient	308
4	2D NOESY	1.5 mM RK1	100% D2O		3.5	ambient	308
5	2D NOESY	1.5 mM RK1	30% CD3CN: 70% H2O		3.5	ambient	308

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	ARX	500
2	Bruker	DMX	750

NMR Refinement
Method	Details	Software
simulated annealing	The structures are based on a total of 509 distance restraints consisting of 498 NOE-derived distance restraints, 11 restraints from hydrogen bonds and 31 dihedral angle restraints	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with acceptable covalent geometry
Conformers Calculated Total Number	50
Conformers Submitted Total Number	20
Representative Model	9 (lowest energy)

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	data analysis	X-EASY	1.3.7	Eccles, Guntert, Billeter, Wuthrich
3	structure solution	X-PLOR	3.1	Brunger
4	refinement	X-PLOR	3.1	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.