Experiment: 1Y0J

Zinc fingers as protein recognition motifs: structural basis for the GATA-1/Friend of GATA interaction

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	HNCO	0.5mM GNF U-15N,13C; 2mM tris-carboxyethylphosphine (TCEP); 1mM zinc sulphate; 20mM Sodium Acetate	95% H2O/5% D2O		5.5	ambient	280
2	HNCA	0.5mM GNF U-15N,13C; 2mM tris-carboxyethylphosphine (TCEP); 1mM zinc sulphate; 20mM Sodium Acetate	95% H2O/5% D2O		5.5	ambient	280
3	HNCA	0.5mM USF1 U-15N,13C; 2mM tris-carboxyethylphosphine (TCEP); 1mM zinc sulphate; 20mM Sodium Acetate	95% H2O/5% D2O		5.5	ambient	280
4	HNCOCA	0.5mM USF1 U-15N,13C; 2mM tris-carboxyethylphosphine (TCEP); 1mM zinc sulphate; 20mM Sodium Acetate	95% H2O/5% D2O		5.5	ambient	280
5	HNCA	0.5mM GNF U-15N,13C; 0.6mM USF1; 2mM tris-carboxyethylphosphine (TCEP); 1mM zinc sulphate; 20mM Sodium Acetate	95% H2O/5% D2O		5.5	ambient	280
6	CBCA(CO)NH	0.5mM GNF U-15N,13C; 0.6mM USF1; 2mM tris-carboxyethylphosphine (TCEP); 1mM zinc sulphate; 20mM Sodium Acetate	95% H2O/5% D2O		5.5	ambient	280
7	15N, 13C double decoupled NOESY	0.5mM GNF U-15N,13C; 0.6mM USF1; 2mM tris-carboxyethylphosphine (TCEP); 1mM zinc sulphate; 20mM Sodium Acetate	95% H2O/5% D2O		5.5	ambient	280
8	HCCH-TOCSY	0.5mM GNF U-15N,13C; 0.6mM USF1; 2mM tris-carboxyethylphosphine (TCEP); 1mM zinc sulphate; 20mM Sodium Acetate	95% H2O/5% D2O		5.5	ambient	280
9	15N, 13C double half-filtered NOESY	0.5mM GNF; 0.6mM USF1 U-15N,13C; 2mM tris-carboxyethylphosphine (TCEP); 1mM zinc sulphate; 20mM Sodium Acetate	95% H2O/5% D2O		5.5	ambient	280
10	hncacb	0.5mM GNF; 0.6mM USF1 U-15N,13C; 2mM tris-carboxyethylphosphine (TCEP); 1mM zinc sulphate; 20mM Sodium Acetate	95% H2O/5% D2O		5.5	ambient	280

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

NMR Refinement
Method	Details	Software
simulated annealing molecular dynamics torsion angle dynamics	Standard triple-resonance NMR spectroscopy was first used to determine the preliminary structure of the complex. Since the backbone folds of both GNF and USF1 did not appear to be substantially altered to those of the proteins in isolation, the computer program Haddock was used to dock the two partner proteins using intermolecular NOEs obtained from double half-filtered NOESY experiments, and ambiguous restraints derived from mutagenesis and NMR titration experiments.	XwinNMR

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

Additional NMR Experimental Information
Details	Other commonly used standard triple-resonance NMR experiments were also recorded.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	XwinNMR	2.5	Bruker
2	data analysis	XEASY	1.3.13	Bartels et al
3	structure solution	ARIA	1.2	Linge et al
4	structure solution	HADDOCK	1.0	Donminguez et al
5	refinement	HADDOCK	1.0	Donminguez et al