5T43

NMR Structure of Apo-form Human Tear Lipocalin

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	1.0 mM [U-99% 13C; U-99% 15N] Lipocalin, 90 % H2O, 10 % D2O, 50 mM sodium phosphate, 0.04 % sodium azide	90% H2O/10% D2O	50 mM	7.4	1 atm	310	Bruker AVANCE 700
2	2D 1H-13C HSQC	1.0 mM [U-99% 13C; U-99% 15N] Lipocalin, 90 % H2O, 10 % D2O, 50 mM sodium phosphate, 0.04 % sodium azide	90% H2O/10% D2O	50 mM	7.4	1 atm	310	Bruker AVANCE 700
3	3D CBCA(CO)NH	1.0 mM [U-99% 13C; U-99% 15N] Lipocalin, 90 % H2O, 10 % D2O, 50 mM sodium phosphate, 0.04 % sodium azide	90% H2O/10% D2O	50 mM	7.4	1 atm	310	Bruker AVANCE 700
4	3D HNCACB	1.0 mM [U-99% 13C; U-99% 15N] Lipocalin, 90 % H2O, 10 % D2O, 50 mM sodium phosphate, 0.04 % sodium azide	90% H2O/10% D2O	50 mM	7.4	1 atm	310	Bruker AVANCE 700
5	3D HNCO	1.0 mM [U-99% 13C; U-99% 15N] Lipocalin, 90 % H2O, 10 % D2O, 50 mM sodium phosphate, 0.04 % sodium azide	90% H2O/10% D2O	50 mM	7.4	1 atm	310	Bruker AVANCE 700
6	3D HNCACO	1.0 mM [U-99% 13C; U-99% 15N] Lipocalin, 90 % H2O, 10 % D2O, 50 mM sodium phosphate, 0.04 % sodium azide	90% H2O/10% D2O	50 mM	7.4	1 atm	310	Bruker AVANCE 700

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
2	Bruker	AVANCE	700

NMR Refinement
Method	Details	Software
simulated annealing		X-PLOR NIH

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	5000
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
2	structure calculation	CYANA		Guntert, Mumenthaler and Wuthrich
3	chemical shift assignment	NMRView		Johnson, One Moon Scientific
4	peak picking	NMRView		Johnson, One Moon Scientific