5WAH

SOLUTION NMR STRUCTURE OF SIGLEC-5 BINDING DOMAIN FROM STREPTOCOCCAL BETA PROTEIN

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	0.45 mM [U-13C; U-15N] IgA-Fc Receptor, 20 mM sodium phosphate, 4 uM DSS, 0.01 % sodium azide, 100 mM sodium chloride	90% H2O/10% D2O	130 mM	6.5	1 bar	298	Agilent DD2 900
2	2D 1H-13C CT-HSQC aliphatic	0.45 mM [U-13C; U-15N] IgA-Fc Receptor, 20 mM sodium phosphate, 4 uM DSS, 0.01 % sodium azide, 100 mM sodium chloride	90% H2O/10% D2O	130 mM	6.5	1 bar	298	Agilent DD2 900
3	2D 1H-13C CT-HSQC aromatic	0.45 mM [U-13C; U-15N] IgA-Fc Receptor, 20 mM sodium phosphate, 4 uM DSS, 0.01 % sodium azide, 100 mM sodium chloride	90% H2O/10% D2O	130 mM	6.5	1 bar	298	Agilent DD2 900
4	3D HNCO	0.45 mM [U-13C; U-15N] IgA-Fc Receptor, 20 mM sodium phosphate, 4 uM DSS, 0.01 % sodium azide, 100 mM sodium chloride	90% H2O/10% D2O	130 mM	6.5	1 bar	298	Agilent DD2 600
5	3D CBCA(CO)NH	0.45 mM [U-13C; U-15N] IgA-Fc Receptor, 20 mM sodium phosphate, 4 uM DSS, 0.01 % sodium azide, 100 mM sodium chloride	90% H2O/10% D2O	130 mM	6.5	1 bar	298	Varian VNMRS 600
7	3D HNCACB	0.45 mM [U-13C; U-15N] IgA-Fc Receptor, 20 mM sodium phosphate, 4 uM DSS, 0.01 % sodium azide, 100 mM sodium chloride	90% H2O/10% D2O	130 mM	6.5	1 bar	298	Agilent DD2 600
12	3D (H)CA(CO)NH	0.45 mM [U-13C; U-15N] IgA-Fc Receptor, 20 mM sodium phosphate, 4 uM DSS, 0.01 % sodium azide, 100 mM sodium chloride	90% H2O/10% D2O	130 mM	6.5	1 bar	298	Agilent DD2 600
11	3D HBHA(CO)NH	0.45 mM [U-13C; U-15N] IgA-Fc Receptor, 20 mM sodium phosphate, 4 uM DSS, 0.01 % sodium azide, 100 mM sodium chloride	90% H2O/10% D2O	130 mM	6.5	1 bar	298	Varian VNMRS 600
10	3D HCCH-COSY aliphatic	0.45 mM [U-13C; U-15N] IgA-Fc Receptor, 20 mM sodium phosphate, 4 uM DSS, 0.01 % sodium azide, 100 mM sodium chloride	90% H2O/10% D2O	130 mM	6.5	1 bar	298	Agilent DD2 800
9	3D HCCH-COSY aromatic	0.45 mM [U-13C; U-15N] IgA-Fc Receptor, 20 mM sodium phosphate, 4 uM DSS, 0.01 % sodium azide, 100 mM sodium chloride	90% H2O/10% D2O	130 mM	6.5	1 bar	298	Agilent DD2 800
8	3D HCCH-TOCSY aliphatic	0.45 mM [U-13C; U-15N] IgA-Fc Receptor, 20 mM sodium phosphate, 4 uM DSS, 0.01 % sodium azide, 100 mM sodium chloride	90% H2O/10% D2O	130 mM	6.5	1 bar	298	Agilent DD2 900
6	3D 1H-15N NOESY	0.45 mM [U-13C; U-15N] IgA-Fc Receptor, 20 mM sodium phosphate, 4 uM DSS, 0.01 % sodium azide, 100 mM sodium chloride	90% H2O/10% D2O	130 mM	6.5	1 bar	298	Agilent DD2 800
13	3D 1H-13C NOESY	0.45 mM [U-13C; U-15N] IgA-Fc Receptor, 20 mM sodium phosphate, 4 uM DSS, 0.01 % sodium azide, 100 mM sodium chloride	90% H2O/10% D2O	130 mM	6.5	1 bar	298	Agilent DD2 800

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Agilent	DD2	600
2	Varian	VNMRS	600
3	Agilent	DD2	900
4	Agilent	DD2	800

NMR Refinement
Method	Details	Software
simulated annealing	Structure determination was performed by running CYANA and AS-DP in parallel using NOE-based distance constraints and PHI, PSI and CHI1 dihedral angle constraints from TALOS-N. Consensus peak assignments were selected and used in iterative refinement with CYANA. 20 conformers with the lowest target function out of 100 were further refined by simulated annealing in explicit water bath using the program CNS with PARAM19 force field and upper limit distance constraints relaxed by 5%	CNS

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	CNS		Brunger A. T. et.al.
2	structure calculation	CYANA	3.97	Guntert, Mumenthaler and Wuthrich
3	chemical shift assignment	CARA	1.9.1.7	Keller and Wuthrich
4	peak picking	CARA	1.9.1.7	Keller and Wuthrich
5	collection	VnmrJ	4.2A	Varian
6	processing	NMRPipe	8.9	Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax