2KE9

NMR solution structure of the CASKIN SH3 domain

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	0.6 mM [U-98% 13C; U-98% 15N] caskinSH3-1, 10 mM D2O-2, 0.05 % sodium azide-3, 150 mM sodium chloride-4, 20 mM sodium phosphate-5	90% H2O/10% D2O	0.15	7.8	ambient	293
2	2D 1H-13C HSQC	0.6 mM [U-98% 13C; U-98% 15N] caskinSH3-1, 10 mM D2O-2, 0.05 % sodium azide-3, 150 mM sodium chloride-4, 20 mM sodium phosphate-5	90% H2O/10% D2O	0.15	7.8	ambient	293
3	3D CBCA(CO)NH	0.6 mM [U-98% 13C; U-98% 15N] caskinSH3-1, 10 mM D2O-2, 0.05 % sodium azide-3, 150 mM sodium chloride-4, 20 mM sodium phosphate-5	90% H2O/10% D2O	0.15	7.8	ambient	293
4	3D C(CO)NH	0.6 mM [U-98% 13C; U-98% 15N] caskinSH3-1, 10 mM D2O-2, 0.05 % sodium azide-3, 150 mM sodium chloride-4, 20 mM sodium phosphate-5	90% H2O/10% D2O	0.15	7.8	ambient	293
5	3D HNCO	0.6 mM [U-98% 13C; U-98% 15N] caskinSH3-1, 10 mM D2O-2, 0.05 % sodium azide-3, 150 mM sodium chloride-4, 20 mM sodium phosphate-5	90% H2O/10% D2O	0.15	7.8	ambient	293
6	3D HNCACB	0.6 mM [U-98% 13C; U-98% 15N] caskinSH3-1, 10 mM D2O-2, 0.05 % sodium azide-3, 150 mM sodium chloride-4, 20 mM sodium phosphate-5	90% H2O/10% D2O	0.15	7.8	ambient	293
7	3D H(CCO)NH	0.6 mM [U-98% 13C; U-98% 15N] caskinSH3-1, 10 mM D2O-2, 0.05 % sodium azide-3, 150 mM sodium chloride-4, 20 mM sodium phosphate-5	90% H2O/10% D2O	0.15	7.8	ambient	293
8	3D 1H-15N NOESY	0.6 mM [U-98% 13C; U-98% 15N] caskinSH3-1, 10 mM D2O-2, 0.05 % sodium azide-3, 150 mM sodium chloride-4, 20 mM sodium phosphate-5	90% H2O/10% D2O	0.15	7.8	ambient	293
9	3D 1H-13C NOESY	0.6 mM [U-98% 13C; U-98% 15N] caskinSH3-1, 10 mM D2O-2, 0.05 % sodium azide-3, 150 mM sodium chloride-4, 20 mM sodium phosphate-5	90% H2O/10% D2O	0.15	7.8	ambient	293

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	NMRS	600

NMR Refinement
Method	Details	Software
torsion angle dynamics, water refinement	CYANA 2.1 was used to determine 250 initial solutions of which 25 were selected as the initial ensemble. 5000 steps of torsion angle dynamics were performed, XPLOR-NIH 2.21 was used to further refine the 25 structure in explicit solvent. 2000 hot steps at 500 K were performed followed by 500 cool steps down to 100 K in 100 K steps.	CYANA

NMR Ensemble Information
Conformer Selection Criteria
Conformers Calculated Total Number	25
Conformers Submitted Total Number	15
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	CYANA	2.1	Guntert, P. et al.
2	peak picking	NMRView	5.1	Johnson, B. et al.
3	refinement	X-PLOR NIH	2.21	Schwieters, C.D. et al.