1G7E

NMR STRUCTURE OF N-DOMAIN OF ERP29 PROTEIN

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	HNCA, HNCO, HN(CO)CA	0.3mM N-domain ERp29 U-15N,13C	90% H2O/10% D2O	.1	4.7	ambient	308
2	3D_15N-separated_NOESY	0.3mM N-domain ERp29 U-15N,13C	90% H2O/10% D2O	.1	4.7	ambient	308
3	3D_13C-separated_NOESY	0.3mM N-domain ERp29 U-15N,13C	90% H2O/10% D2O	.1	4.7	ambient	308
4	2D NOESY, 2D TOCSY, 2D DQF COSY	0.3mM N-domain ERp29	90% H2O/10% D2O	.1	4.7	ambient	308
5	1H-15N HSQC, 1H-13C HSQC	0.3mM N-domain ERp29 U-15N,13C	90% H2O/10% D2O	.1	4.7	ambient	308

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DMX	600
2	Varian	UNITYPLUS	800

NMR Refinement
Method	Details	Software
torsion angle dynamics, simulated annealing	The input for the final structure calculation of N-domain protein consisted of 1279 upper limit distance restraints and 358 dihedral angle restraints. 185 of the dihedral angle restraints reflected coupling constant information, while 173 of them had been derived by HABAS from NOE and steric restraints alone.	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy,target function
Conformers Calculated Total Number	50
Conformers Submitted Total Number	20
Representative Model	17 (lowest energy. model #1 was best after dyana calculations, model #17 was best after opal refinement)

Additional NMR Experimental Information
Details	The signal assignment was determined using triple-resonance NMR spectroscopy. The structure was determined using standard 2D homonuclear techniques.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	2.5	Bruker
2	processing	PROSA	3.6	Guentert
3	data analysis	XEASY	970326	Bartels
4	structure solution	DYANA	1.5	Guentert
5	refinement	OPAL	2.6	Luginbul
6	data analysis	MOLMOL	2.6.0	Koradi

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 R01GM133198.