1NZ8

Solution Structure of the N-utilization substance G (NusG) N-terminal (NGN) domain from Thermus thermophilus

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	1.2mM NusG N-domain, 50mM phosphate buffer, 100mM KCL, 95% H2O, 5% D2O	95% H2O/5% D2O	50mM phosphate, 100mM KCl	6.5	ambient	318
2	HSQC	1.2mM 15N NusG N-domain, 50mM phosphate buffer, 100mM KCL	100% D2O	50mM phosphate, 100mM KCl	6.5	ambient	318
3	HMQC-J	1.2mM 15N NusG N-domain, 50mM phosphate buffer, 100mM KCL, 95% H2O, 5% D2O	95% H2O/5% D2O	50mM phosphate, 100mM KCl	6.5	ambient	318

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DMX	500
2	Bruker	DMX	750

NMR Refinement
Method	Details	Software
simulated annealing, molecular dynamics, torsion angle dynamics	1356 UNAMBIGUOUS NOE DISTANCE RESTRAINTS, 90 HYDROGEN BOND RESTRAINTS, 82 HN-N DIPOLAR COUPLINGS, NO RESONANCES WERE ASSIGNED FOR MET 1, GLU 50, GLY 51, PRO 89, GLY 90, GLY 93, GLY 98 AND MET 99	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy, NONE WITH DISTANCE VIOLATIONS > 0.2 ANGSTROMS, NONE WITH DIHEDRAL ANGLE RESTRAINT VIOLATIONS > 2 DEGREES
Conformers Calculated Total Number	90
Conformers Submitted Total Number	31
Representative Model	1 (lowest energy)

Additional NMR Experimental Information
Details	Model 31 is the minimized average structure

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	XwinNMR	2.6	Bruker
2	data analysis	ANSIG	3.3	Kraulis
3	structure solution	CNS	1.1	Brunger
4	refinement	CNS	1.1

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.