2HVZ

Solution structure of the RRM domain of SR rich factor 9G8

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_13C-separated_NOESY	NMR sample: 13C, 15N-9G8 RRM at 0.6 mM Buffer conditions: 20mM CH3COONa (pH=5.5), 25mM L-ARG, 50mM L-Glu, 5mM EDTA, 10mM DTT; 90% H2O, 10% D2O	90% H2O/10% D2O		5.5	ambient	293
2	3D_15N-separated_NOESY	NMR sample: 13C, 15N-9G8 RRM at 0.6 mM Buffer conditions: 20mM CH3COONa (pH=5.5), 25mM L-ARG, 50mM L-Glu, 5mM EDTA, 10mM DTT; 90% H2O, 10% D2O	90% H2O/10% D2O		5.5	ambient	293
3	2D TOCSY	NMR sample: 13C, 15N-9G8 RRM at 0.6 mM Buffer conditions: 20mM CH3COONa (pH=5.5), 25mM L-ARG, 50mM L-Glu, 5mM EDTA, 10mM DTT; 90% H2O, 10% D2O	90% H2O/10% D2O		5.5	ambient	293

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	600

NMR Refinement
Method	Details	Software
distance geometry simulated annealing	the structures are based on a total of 1138 restraints, 951 are NOE-derived distance constraints, 119 dihedral angle restraints and 68 distance restraints from hydrogen bonds	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Additional NMR Experimental Information
Details	The 9G8 sequence starts at K2 and finishes at R88, corresponding to K12 and R98, respectively. All the other amino-acids are part of the T7 and histidine tags.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	3.5
2	processing	NMRPipe	1.0	F. Delaglio, S. Grzesiek, G. W. Vuister, G. Zhu, J. Pfeifer and A. Bax
3	data analysis	NMRView	5.01	B.A.Johnson and R.A.Blevins
4	structure solution	CYANA	2.1	P.Guntert, C.Mumenthaler and K. Wuthrich,
5	refinement	Amber	7.0	Case DA, Cheatham TE 3rd, Darden T, Gohlke H, Luo R, Merz KM Jr, Onufriev A, Simmerling C, Wang B, Woods RJ