7CSS

Solution structure of the topological isomer of Heat-stable enterotoxin produced by Enterotoxigenic Escherichia coli

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D DQF-COSY	2 mg/mL topological isomer of STh	90% H2O/10% D2O	25 mM	6.5	1.0 atm	298.15	JEOL JNM-ECA800 800
2	2D 1H-1H NOESY	2 mg/mL topological isomer of STh	90% H2O/10% D2O	25 mM	6.5	1.0 atm	298.15	JEOL JNM-ECA800 800
3	2D 1H-1H NOESY	2 mg/mL topological isomer of STh	100% D2O	25 mM	6.5	1.0 atm	298.15	JEOL JNM-ECA800 800

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	JEOL	JNM-ECA800	800

NMR Refinement
Method	Details	Software
simulated annealing		CNS

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	1000
Conformers Submitted Total Number	10
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure calculation	CNS		Brunger, Adams, Clore, Gros, Nilges and Read

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.