6Y6M

solution structure of cold-shock domain 1 and 2 of drosophila Upstream of N-Ras (Unr)

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D 1H-15N NOESY	50 mM sodium chloride, 20 mM sodium phosphate, 10 mM DTT, 0.3 mM [U-99% 13C; U-99% 15N] protein, 0.36 mM RNA	95% H2O/5% D2O	50 mM	6.4	1 atm	298	Bruker AVANCE III 800
2	2D 1H-13C HSQC aliphatic	50 mM sodium chloride, 20 mM sodium phosphate, 10 mM DTT, 0.3 mM [U-99% 13C; U-99% 15N] protein, 0.36 mM RNA	100% D2O	50 mM	6.4	1 atm	298	Bruker AVANCE III 800
3	3D CBCA(CO)NH	50 mM sodium chloride, 20 mM sodium phosphate, 10 mM DTT, 0.3 mM [U-99% 13C; U-99% 15N] protein, 0.36 mM RNA	95% H2O/5% D2O	50 mM	6.4	1 atm	298	Bruker AVANCE III 600
4	3D HNCA	50 mM sodium chloride, 20 mM sodium phosphate, 10 mM DTT, 0.3 mM [U-99% 13C; U-99% 15N] protein, 0.36 mM RNA	95% H2O/5% D2O	50 mM	6.4	1 atm	298	Bruker AVANCE III 600
5	3D HNCACB	50 mM sodium chloride, 20 mM sodium phosphate, 10 mM DTT, 0.3 mM [U-99% 13C; U-99% 15N] protein, 0.36 mM RNA	95% H2O/5% D2O	50 mM	6.4	1 atm	298	Bruker AVANCE III 600
12	3D HN(CO)CA	50 mM sodium chloride, 20 mM sodium phosphate, 10 mM DTT, 0.3 mM [U-99% 13C; U-99% 15N] protein, 0.36 mM RNA	95% H2O/5% D2O	50 mM	6.4	1 atm	298	Bruker AVANCE III 600
11	2D 1H-15N HSQC	50 mM sodium chloride, 20 mM sodium phosphate, 10 mM DTT, 0.3 mM [U-99% 13C; U-99% 15N] protein, 0.36 mM RNA	95% H2O/5% D2O	50 mM	6.4	1 atm	298	Bruker AVANCE III 600
10	3D 1H-13C NOESY aliphatic	50 mM sodium chloride, 20 mM sodium phosphate, 10 mM DTT, 0.3 mM [U-99% 13C; U-99% 15N] protein, 0.36 mM RNA	100% D2O	50 mM	6.4	1 atm	298	Bruker AVANCE III 800
9	3D HBHA(CO)NH	50 mM sodium chloride, 20 mM sodium phosphate, 10 mM DTT, 0.3 mM [U-99% 13C; U-99% 15N] protein, 0.36 mM RNA	95% H2O/5% D2O	50 mM	6.4	1 atm	298	Bruker AVANCE III 800
8	3D HCCH-TOCSY	50 mM sodium chloride, 20 mM sodium phosphate, 10 mM DTT, 0.3 mM [U-99% 13C; U-99% 15N] protein, 0.36 mM RNA	100% D2O	50 mM	6.4	1 atm	298	Bruker AVANCE III 800
13	2D 1H-1H NOESY	50 mM sodium chloride, 20 mM sodium phosphate, 10 mM DTT, 0.3 mM [U-99% 13C; U-99% 15N] protein, 0.36 mM RNA	100% D2O	50 mM	6.4	1 atm	298	Bruker AVANCE III 800

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE III	600
2	Bruker	AVANCE III	800

NMR Refinement
Method	Details	Software
simulated annealing		ARIA

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)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	ARIA		Linge, O'Donoghue and Nilges
2	structure calculation	CYANA		Guntert, Mumenthaler and Wuthrich
5	chemical shift assignment	NMRView		Johnson, One Moon Scientific
4	peak picking	CARA		Keller and Wuthrich
6	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
7	collection	TopSpin		Bruker Biospin

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.