1N3G

Solution structure of the ribosome-associated cold shock response protein Yfia of Escherichia coli

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	HNHA	0.8mM Yfia, U-15N-13C; 50mM phosphate buffer, 50mM LiCl	90% H2O/10% D2O	50mM LiCl, 50mM KH2PO4	6.5	ambient	300
2	3D_15N-separated_NOESY	0.5mM Yfia, U-15N; 50mM phosphate buffer, 50mM LiCl	90% H2O/10% D2O	50mM LiCl, 50mM KH2PO4	6.5	ambient	300
3	3D_13C-separated_NOESY	0.8mM Yfia, U-15N-13C; 50mM phosphate buffer, 50mM LiCl	90% H2O/10% D2O	50mM LiCl, 50mM KH2PO4	6.5	ambient	300
4	2D NOESY	0.8mM Yfia; 50mM phosphate buffer, 50mM LiCl	90% H2O/10% D2O	50mM LiCl, 50mM KH2PO4	6.5	ambient	300

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	600
2	Bruker	DRX	500

NMR Refinement
Method	Details	Software
Torsion angle dynamics and simulated annealing		XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with acceptable covalent geometry, structures with the least restraint violations
Conformers Calculated Total Number	50
Conformers Submitted Total Number	29
Representative Model	1 (lowest energy)

Additional NMR Experimental Information
Details	Hydrogen bonds were extracted from a series of 15N-HSQC spectra recorded in D2O; Assignment was done using triple-resonance spectra

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	XwinNMR	3.2	Bruker, Rheinstetten, Germany
2	data analysis	NDEE	2.03	SpinUp, Dortmund, Germany
3	collection	VNMR	6.1B	Varian, Darmstadt, Germany
4	data analysis	AURELIA	2.3	Bruker, Rheinstetten, Germany
5	refinement	CNS	1.0	Axel Bruenger

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.