2N55 | pdb_00002n55

Structure of constitutively monomeric CXCL12 in complex with the CXCR4 N-terminus

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D 1H-15N NOESY	2 mM [U-99% 13C; U-99% 15N] protein_1, 25 mM [U-2H] MES, 10 % [U-99% 2H] D2O, 0.02 % sodium azide, 2 mM protein_2	90% H2O/10% D2O	0.02	6.8	ambient	298
2	3D 1H-13C NOESY aliphatic	2 mM [U-99% 13C; U-99% 15N] protein_1, 25 mM [U-2H] MES, 10 % [U-99% 2H] D2O, 0.02 % sodium azide, 2 mM protein_2	90% H2O/10% D2O	0.02	6.8	ambient	298
3	3D 1H-13C NOESY aromatic	2 mM [U-99% 13C; U-99% 15N] protein_1, 25 mM [U-2H] MES, 10 % [U-99% 2H] D2O, 0.02 % sodium azide, 2 mM protein_2	90% H2O/10% D2O	0.02	6.8	ambient	298
4	3D 1H-15N NOESY	1 mM [U-99% 13C; U-99% 15N] protein_2, 25 mM [U-2H] MES, 0.02 % sodium azide, 10 % [U-99% 2H] D2O, 2 mM protein_1	90% H2O/10% D2O	0.02	6.8	ambient	298
5	3D 1H-13C NOESY aliphatic	1 mM [U-99% 13C; U-99% 15N] protein_2, 25 mM [U-2H] MES, 0.02 % sodium azide, 10 % [U-99% 2H] D2O, 2 mM protein_1	90% H2O/10% D2O	0.02	6.8	ambient	298
6	3D 1H-13C NOESY aromatic	1 mM [U-99% 13C; U-99% 15N] protein_2, 25 mM [U-2H] MES, 0.02 % sodium azide, 10 % [U-99% 2H] D2O, 2 mM protein_1	90% H2O/10% D2O	0.02	6.8	ambient	298
7	3D F1-13C filtered/F3-13C edited NOESY aliphatic	2 mM [U-99% 13C; U-99% 15N] protein_1, 25 mM [U-2H] MES, 10 % [U-99% 2H] D2O, 0.02 % sodium azide, 2 mM protein_2	90% H2O/10% D2O	0.02	6.8	ambient	298
8	3D F1-13C filtered/F3-13C edited NOESY aliphatic	1 mM [U-99% 13C; U-99% 15N] protein_2, 25 mM [U-2H] MES, 0.02 % sodium azide, 10 % [U-99% 2H] D2O, 2 mM protein_1	90% H2O/10% D2O	0.02	6.8	ambient	298

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

NMR Refinement
Method	Details	Software
torsion angle dynamics, molecular dynamics		CYANA

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	structure solution	CYANA		Guntert, Mumenthaler and Wuthrich
2	refinement	CYANA		Guntert, Mumenthaler and Wuthrich
3	chemical shift assignment	XEASY		Bartels et al.
4	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
5	chemical shift assignment	GARANT		Bartels, Guntert, Billeter and Wuthrich
6	collection	TopSpin		Bruker Biospin
7	geometry optimization	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
8	data analysis	TALOS		Cornilescu, Delaglio and Bax
9	refinement	X-PLOR NIH