1N91

Solution NMR Structure of Protein yggU from Escherichia coli. Northeast Structural Genomics Consortium Target ER14.

SOLUTION NMR

---

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D 15N-NOESY	1.0 mM ER14 U-15N,13C in 20mM MES, 50mM NaCl, 5mM DTT, pH 6.5	95% H2O/5% D2O	50 mM NaCl	6.5	ambient	293
2	3D 13C-NOESY	1.0 mM ER14 U-15N,13C in 20mM MES, 50mM NaCl, 5mM DTT, pH 6.5	95% H2O/5% D2O	50 mM NaCl	6.5	ambient	293
3	3D aromatic 13C-NOESY	1.0 mM ER14 U-15N,13C in 20mM MES, 50mM NaCl, 5mM DTT, pH 6.5	95% H2O/5% D2O	50 mM NaCl	6.5	ambient	293
4	2D 15N,1H HSQC-J	1.0 mM ER14 U-15N,13C in 20mM MES, 50mM NaCl, 5mM DTT, pH 6.5	95% H2O/5% D2O	50 mM NaCl	6.5	ambient	293
5	2D 15N,1H MEXICO	1.0 mM ER14 U-15N,13C in 20mM MES, 50mM NaCl, 5mM DTT, pH 6.5	95% H2O/5% D2O	50 mM NaCl	6.5	ambient	293

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	500
2	Varian	INOVA	600
3	Varian	INOVA	750

NMR Refinement
Method	Details	Software
torsion angle dynamics simulated annealing	The structures are based on a total of 1419 conformationally-restricting NOE-derived distance restraints, 210 dihedral angle restraints, and 78 hydrogen bond restraints. Initial structure determination was performed by torsion angle dynamics (DYANA). The final structures submitted were refined by simulated annealing (XPLOR).	VNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	10
Representative Model	1 (lowest energy)

Additional NMR Experimental Information

Details

The structure was determined using triple-resonance NMR spectroscopy. Automatic backbone resonance assignments were made using AUTOASSIGN. Automatic NOESY assignments as well as distance and hydrogen bond restraints were determined using the AUTOSTRUCTURE program. Dihedral angle restraints were determined using HYPER and TALOS. Backbone conformations for residues 1-5, 25-26, 66, 101-108 are not well-defined [S(phi) + S(psi) < 1.8] in this solution NMR structure.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	VNMR	6.1B	VARIAN Inc.
2	processing	NMRPipe	2.1	Delaglio, Bax
3	data analysis	Sparky	3.106	Goddard, Kneller
4	data analysis	AutoAssign	1.9	Moseley, Zimmerman, Montelione
5	structure solution	AutoStructure	1.1.2	Huang, Montelione
6	structure solution	HYPER	2.70	Tejero, Montelione
7	structure solution	TALOS	2.1	Cornilescu, Delaglio, Bax
8	refinement	DYANA	1.5	Guntert
9	refinement	X-PLOR	2.0.4 (NIH)	Brunger
10	data analysis	PdbStat	3.27	Tejero, Montelione
11	refinement	AutoStructure	1.1.2	Huang