2ME0

NMR Structure of the homeodomain transcription factor Gbx1 from Homo sapiens solved in the presence of the DNA sequence CGACTAATTAGTCG

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	0.8 mM [U-98% 13C; U-98% 15N] protein, 50 mM sodium chloride, 20 mM sodium phosphate, 5 mM sodium azide, 0.8 mM DNA	95% H2O/5% D2O	0.220	6.5	ambient	308
2	3D 1H-13C NOESY aliphatic	0.8 mM [U-98% 13C; U-98% 15N] protein, 50 mM sodium chloride, 20 mM sodium phosphate, 5 mM sodium azide, 0.8 mM DNA	95% H2O/5% D2O	0.220	6.5	ambient	308
3	3D 1H-13C NOESY aromatic	0.8 mM [U-98% 13C; U-98% 15N] protein, 50 mM sodium chloride, 20 mM sodium phosphate, 5 mM sodium azide, 0.8 mM DNA	95% H2O/5% D2O	0.220	6.5	ambient	308
4	3D 1H-15N NOESY	0.8 mM [U-98% 13C; U-98% 15N] protein, 50 mM sodium chloride, 20 mM sodium phosphate, 5 mM sodium azide, 0.8 mM DNA	95% H2O/5% D2O	0.220	6.5	ambient	308
5	APSY 4D-HACANH	0.8 mM [U-98% 13C; U-98% 15N] protein, 50 mM sodium chloride, 20 mM sodium phosphate, 5 mM sodium azide, 0.8 mM DNA	95% H2O/5% D2O	0.220	6.5	ambient	308
6	APSY 5D-CBCACONH	0.8 mM [U-98% 13C; U-98% 15N] protein, 50 mM sodium chloride, 20 mM sodium phosphate, 5 mM sodium azide, 0.8 mM DNA	95% H2O/5% D2O	0.220	6.5	ambient	308
7	APSY 5D-HACACONH	0.8 mM [U-98% 13C; U-98% 15N] protein, 50 mM sodium chloride, 20 mM sodium phosphate, 5 mM sodium azide, 0.8 mM DNA	95% H2O/5% D2O	0.220	6.5	ambient	308

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	600
2	Bruker	AVANCE	800

NMR Refinement
Method	Details	Software
molecular dynamics		CYANA

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	40
Conformers Submitted Total Number	20
Representative Model	1 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	CYANA		Guntert P.
2	chemical shift assignment	CYANA		Guntert P.
3	refinement	CARA		Keller and Wuthrich
4	chemical shift assignment	CARA		Keller and Wuthrich
5	refinement	OPALp		Luginbuhl, Guntert, Billeter and Wuthrich
6	structure solution	UNIO		Herrmann and Wuthrich
7	chemical shift assignment	UNIO		Herrmann and Wuthrich
8	processing	TopSpin		Bruker Biospin
9	collection	TopSpin		Bruker Biospin

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.