2NS3

Solution structure of ribbon BuIA

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D TOCSY	1mM ribbon BuIA; 90% H2O, 10% D2O	90% H2O/10% D2O		4	ambient	282
2	2D NOESY	1mM ribbon BuIA; 90% H2O, 10% D2O	90% H2O/10% D2O		4	ambient	282
3	DQF-COSY	1mM ribbon BuIA; 90% H2O, 10% D2O	90% H2O/10% D2O		4	ambient	282
4	E-COSY	1mM ribbon BuIA; 90% H2O, 10% D2O	90% H2O/10% D2O		4	ambient	282

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	600

NMR Refinement
Method	Details	Software
simulated annealing		TopSpin

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	50
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	TopSpin	1.3	Bruker
2	data analysis	Sparky	3.113	Goddard Kneller
3	refinement	CNS	1.1