2KT4

Lipocalin Q83 is a Siderocalin

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	1 mM [U-95% 13C; U-95% 15N] Q83, 1 mM Enterobactin, 1 mM Gallium, 0.5 mM DTT, 20 mM potassium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	70	6.5	ambient	298
2	2D 1H-13C HSQC	1 mM [U-95% 13C; U-95% 15N] Q83, 1 mM Enterobactin, 1 mM Gallium, 0.5 mM DTT, 20 mM potassium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	70	6.5	ambient	298
3	3D HNCO	1 mM [U-95% 13C; U-95% 15N] Q83, 1 mM Enterobactin, 1 mM Gallium, 0.5 mM DTT, 20 mM potassium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	70	6.5	ambient	298
4	3D HNCA	1 mM [U-95% 13C; U-95% 15N] Q83, 1 mM Enterobactin, 1 mM Gallium, 0.5 mM DTT, 20 mM potassium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	70	6.5	ambient	298
5	3D HNCACB	1 mM [U-95% 13C; U-95% 15N] Q83, 1 mM Enterobactin, 1 mM Gallium, 0.5 mM DTT, 20 mM potassium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	70	6.5	ambient	298
6	3D HN(CO)CA	1 mM [U-95% 13C; U-95% 15N] Q83, 1 mM Enterobactin, 1 mM Gallium, 0.5 mM DTT, 20 mM potassium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	70	6.5	ambient	298
7	3D HCCH-TOCSY	1 mM [U-95% 13C; U-95% 15N] Q83, 1 mM Enterobactin, 1 mM Gallium, 0.5 mM DTT, 20 mM potassium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	70	6.5	ambient	298
8	3D 1H-15N NOESY	1 mM [U-95% 13C; U-95% 15N] Q83, 1 mM Enterobactin, 1 mM Gallium, 0.5 mM DTT, 20 mM potassium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	70	6.5	ambient	298
9	3D 1H-13C NOESY	1 mM [U-95% 13C; U-95% 15N] Q83, 1 mM Enterobactin, 1 mM Gallium, 0.5 mM DTT, 20 mM potassium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	70	6.5	ambient	298
10	IPAP	1 mM [U-95% 13C; U-95% 15N] Q83, 1 mM Enterobactin, 1 mM Gallium, 0.5 mM DTT, 20 mM potassium phosphate, 50 mM sodium chloride	90% H2O/10% D2O	70	6.5	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	500
2	Varian	INOVA	600
3	Varian	INOVA	800

NMR Refinement
Method	Details	Software
simulated annealing		X-PLOR_NIH

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

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	X-PLOR_NIH		Schwieters, Kuszewski, Tjandra and Clore
2	refinement	X-PLOR_NIH		Schwieters, Kuszewski, Tjandra and Clore

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.