6BY5

Two-State 14-mer UUCG Tetraloop calculated from Exact NOEs (State one: Conformers 1-5, State Two: Conformers 6-10)

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D WaterGate [1H-1H] NOESY buildup series	20 mM KHPO4, 0.4 mM EDTA, 1 mM 14-mer UUCG Tetraloop	95% H2O/5% D2O	20 mM	6.4	1 atm	298	Varian Varian Direct Drive 900
2	2D PreSat [1H-1H] NOESY buildup series	20 mM KHPO4, 0.4 mM EDTA, 1.7 mM 14-mer UUCG Tetraloop	100% D2O	20 mM	6.4	1 atm	298	Varian Varian Direct Drive 900

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	Varian Direct Drive	900

NMR Refinement
Method	Details	Software
torsion angle dynamics	Multi-State Calculation	CYANA

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	100
Conformers Submitted Total Number	10
Representative Model	1 (target function)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
2	peak picking	CcpNMR		CCPN
3	data analysis	CYANA		Guntert, Mumenthaler and Wuthrich
4	refinement	CYANA		Guntert, Mumenthaler and Wuthrich
5	structure calculation	CYANA		Guntert, Mumenthaler and Wuthrich

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.