Experiment: 1T3O

Solution structure of CsrA, a bacterial carbon storage regulatory protein

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	0.5 mM CsrA; U-15N; 50mM phosphate buffer; 150 mM NaCl; 100% D2O	100% D2O	150 mM NaCl	5.2	ambient	300
2	3D_15N-separated_NOESY	0.5 mM CsrA; U-15N; 50mM phosphate buffer; 150 mM NaCl; 95% H2O, 5% D2O	95% H2O/5% D2O	150 mM NaCl	5.2	ambient	300
3	2D NOESY	0.5 mM CsrA; U-15N; 50mM phosphate buffer; 150 mM NaCl; 95% H2O, 5% D2O	95% H2O/5% D2O	150 mM NaCl	5.2	ambient	300

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	600
2	Bruker	DRX	700
3	Bruker	DRX	750

NMR Refinement
Method	Details	Software
Automatic peak assignment by ARIA; simulated annealing in CNS;	200 structures are calculated in each iteration; 30 structures with lowest restraint energy refined after iteration 8. Refinement carried out by inclusion of implicit water solvent.	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number	30
Conformers Submitted Total Number	14
Representative Model	1 (lowest energy)

Additional NMR Experimental Information
Details	In general, all NMR experiments were performed essentially as described in Cavanagh, et al. (1996), especially for 3D experiments required for sequential backbone assignments

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	3.1	Bruker
2	processing	NMRPipe		Delaglio et al.
3	data analysis	NMRView	5.0	Johnson, B
4	structure solution	ARIA	1.2	Linge, J/ Nilges, M
5	structure solution	CNS	1.1	Brunger
6	refinement	CNS	1.1	Brunger