2G7H

Structure of an O6-Methylguanine DNA Methyltransferase from Methanococcus jannaschii (MJ1529)

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_15N-separated_NOESY	0.8 mM Mj1529, U-15N	95% H2O/5% D2O	50 mM sodium phosphate, 500 mM NaCl	6.2	ambient	303
2	HNHA	0.8 mM Mj1529, U-15N	95% H2O/5% D2O	50 mM sodium phosphate, 500 mM NaCl	6.2	ambient	303
3	4D_13C Separated NOESY	0.8 mM MJ1529, U-15N, U-13C	95% H2O/5% D2O	50 mM sodium phosphate, 500 mM NaCl	6.2	ambient	303
4	4D_13C/15N Separated NOESY	0.8 mM MJ1529, U-15N, U-13C	95% H2O/5% D2O	50 mM sodium phosphate, 500 mM NaCl	6.2	ambient	303
5	D20 Exchange	0.8 mM MJ1529	100% D2O	50 mM sodium phosphate, 500 mM NaCl	6.2	ambient	303
6	3d_13C Separated NOESY	0.8 mM MJ1529, U-13C	94% H20, 5% D2O	50 mM sodium phosphate, 500 mM NaCl	6.2	ambient	303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AMX	600
2	Bruker	DRX	500

NMR Refinement
Method	Details	Software
simulated annealing, molecular dynamics in torsion space	150 structures calculated, lowest energy refined with residual dipolar couplings (50 total calculated, taking 10 lowest energy)	CNS

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	150
Conformers Submitted Total Number	10
Representative Model	1 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	CNS	1.1	Brunger
2	processing	NMRPipe	1	Bax
3	data analysis	NMRView	5.0.4	Johnson
4	refinement	CNS	1.1	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 R01GM133198.