1M3A

Solution structure of a circular form of the truncated N-terminal SH3 domain from oncogene protein c-Crk.

SOLUTION NMR

---

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D TOCSY	1mM SH3 NA, 20mM sodium phosphate, 20 mM DTT-d10, 100 mM NaCl, 0.1% (w/v) NaN3	90% H2O/10% D2O	100 mM NaCl	7.2	ambient	307
2	2D NOESY	1mM SH3 NA, 20mM sodium phosphate, 20 mM DTT-d10, 100 mM NaCl, 0.1% (w/v) NaN3	90% H2O/10% D2O	100 mM NaCl	7.2	ambient	307
3	DQF-COSY	1mM SH3 NA, 20mM sodium phosphate, 20 mM DTT-d10, 100 mM NaCl, 0.1% (w/v) NaN3	90% H2O/10% D2O	100 mM NaCl	7.2	ambient	307
4	2D HSQC	1mM SH3 U-15N, 20mM sodium phosphate, 20 mM DTT-d10, 100 mM NaCl, 0.1% (w/v) NaN3	90% H2O/10% D2O	100 mM NaCl	7.2	ambient	307
5	2D TOCSY	1mM SH3 U-15N, 20mM sodium phosphate, 20 mM DTT-d10, 100 mM NaCl, 0.1% (w/v) NaN3	90% H2O/10% D2O	100 mM NaCl	7.2	ambient	307

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DMX	500
2	Bruker	DMX	600
3	Bruker	DRX	600

NMR Refinement
Method	Details	Software
Simulated annealing combined with torsion angle dynamics	The structures are based on 1090 restraints, 993 are NOE-derived distance contraints, 25 dihedral angle constraints, and 72 distance restraints from hydrogen bonds. Structures were calculated using program DYANA. No further refinement was performed.	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest target function
Conformers Calculated Total Number	200
Conformers Submitted Total Number	20
Representative Model	1 (lowest target function)

Additional NMR Experimental Information
Details	This structure was determined using standard 2D homonuclear techniques combined with 2D 1H-15N HSQC data.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	2.6, 3.0	Bruker
2	data analysis	XEASY	1.3.1.3	Bartels, Xia, Wuethrich
3	structure solution	DYANA	1.6	Guentert
4	refinement	DYANA		Guentert, Wuethrich