2AWQ

Solution Structure of pseudouridine-32 modified anticodon stem-loop of E. coli tRNAPhe

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_13C-separated_NOESY	2.3 mM C-13 labeled RNA hairpin, 10 mM NaCl, 10 mM potassium phosphate, pH 6.8	100% D2O	10 mM NaCl, 10 mM potassium phosphate	6.8	ambient	298
2	HCCH-TOCSY	2.3 mM C-13 labeled RNA hairpin, 10 mM NaCl, 10 mM potassium phosphate, pH 6.8	100% D2O	10 mM NaCl, 10 mM potassium phosphate	6.8	ambient	298
3	CCH-RELAY	2.3 mM C-13 labeled RNA hairpin, 10 mM NaCl, 10 mM potassium phosphate, pH 6.8	100% D2O	10 mM NaCl, 10 mM potassium phosphate	6.8	ambient	298
4	3D_15N-separated_NOESY	2.8 mM N-15 labeled RNA hairpin, 10 mM NaCl, 10 mM potassium phosphate, pH 6.8	90% H2O/10% D2O	10 mM NaCl, 10 mM potassium phosphate	6.8	ambient	285
5	DQF-COSY	2.8 mM N-15 labeled RNA hairpin, 10 mM NaCl, 10 mM potassium phosphate, pH 6.8	90% H2O/10% D2O	10 mM NaCl, 10 mM potassium phosphate	6.8	ambient	298
6	HP-HetCor	2.8 mM N-15 labeled RNA hairpin, 10 mM NaCl, 10 mM potassium phosphate, pH 6.8	90% H2O/10% D2O	10 mM NaCl, 10 mM potassium phosphate	6.8	ambient	298

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

NMR Refinement
Method	Details	Software
torsion angle randomization simulated annealing and molecular dynamics	structure determined using NOE derived distance constraints, and torsional angle restraints derived from J-couplings. Hydrogen bonds derived from NOESY and NN-COSY data.	X-PLOR

NMR Ensemble Information
Conformer Selection Criteria	structures with acceptable covalent geometry,structures with favorable non-bond energy,structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number	75
Conformers Submitted Total Number	10
Representative Model	1 (closest to the average,fewest violations)

Additional NMR Experimental Information
Details	pseudouridine assigned using CCH-RELAY type experiments. Base pairing determined from interresidue N-N scalar correlations. Distances derived from multiple mixing time NOESY experiments.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	X-PLOR	3.851	Brunger
2	processing	Felix	2000	accelrys

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.