1DU6

SOLUTION STRUCTURE OF THE TRUNCATED PBX HOMEODOMAIN

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_15N-separated_NOESY	2.5 mM PBX U-15N; 10 mM phosphate buffer; 1 mM DTT; 90% H2O, 10% D2O	90% H2O/10% D2O		4.8	ambient	303
2	HNHA	2.5 mM PBX U-15N; 10 mM phosphate buffer; 1 mM DTT; 90% H2O, 10% D2O	90% H2O/10% D2O		4.8	ambient	303
3	2D NOESY	2 mM PBX; 1mM DTT; 90% H2O, 10% D2O	90% H2O/10% D2O		6.0	ambient	303
4	2D NOESY	4 mM PBX; 20 mM phosphate buffer; 1 mM DTT; 100% D2O	100% D2O		6.0	ambient	303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	500

NMR Refinement
Method	Details	Software
dynamical annealing	1338 restraints, 1268 NOE-derived distance constraints, 48 dihedral angle restraints, 22 distance restraints from hydrogen bonds	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	30
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	2.0	Bruker
2	processing	Gifa	4.2	Pons, Malliavin, Delsuc
3	structure solution	CNS	0.5	Brunger
4	data analysis	XEASY	1.3.13	Bartels, Xia, Billeter, Guntert, Wuthrich
5	refinement	CNS	0.5	Brunger

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 R01GM157729.