1PPX | pdb_00001ppx

Solution Structure of the MutT Pyrophosphohydrolase Complexed with Mg(2+) and 8-oxo-dGMP, a Tightly-bound Product

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_15N-separated_NOESY	1mM MutT, 1.3mM 8-oxo-dGMP, 15mM MgCl2, 4mM d11-Tris-HCl, pH 7.5, 21mM NaCl, 0.34mM NaN3.	90% H2O/10% D2O	21mM NaCl	7.5	ambient	295
2	2D NOESY	1mM MutT, 1.3mM 8-oxo-dGMP, 15mM MgCl2, 4mM d11-Tris-HCl, pH 7.5, 21mM NaCl, 0.34mM NaN3.	90% H2O/10% D2O	21mM NaCl	7.5	ambient	295
3	2D TOCSY	1mM MutT, 1.3mM 8-oxo-dGMP, 15mM MgCl2, 4mM d11-Tris-HCl, pH 7.5, 21mM NaCl, 0.34mM NaN3.	90% H2O/10% D2O	21mM NaCl	7.5	ambient	295
4	3D_13C-separated_NOESY	1mM MutT, 1.3mM 8-oxo-dGMP, 15mM MgCl2, 4mM d11-Tris-HCl, pH 7.5, 21mM NaCl, 0.34mM NaN3.	90% H2O/10% D2O	21mM NaCl	7.5	ambient	295
5	15N-1H IPAP-HSQC	1mM MutT, 1.3mM 8-oxo-dGMP, 15mM MgCl2, 4mM d11-Tris-HCl, pH 7.5, 21mM NaCl, 0.34mM NaN3.	90% H2O, 10% D2O. 3% (w/v) bicelles (C8E5/octanol ratio 0.87)	21mM NaCl	7.5	ambient	295
6	12C/13C-filtered-NOESY-HSQC	1mM MutT, 1.3mM 8-oxo-dGMP, 15mM MgCl2, 4mM d11-Tris-HCl, pH 7.5, 21mM NaCl, 0.34mM NaN3.	90% H2O/10% D2O	21mM NaCl	7.5	ambient	295
7	HNCA	1mM MutT, 1.3mM 8-oxo-dGMP, 15mM MgCl2, 4mM d11-Tris-HCl, pH 7.5, 21mM NaCl, 0.34mM NaN3.	90% H2O/10% D2O	21mM NaCl	7.5	ambient	295
8	NHCACB	1mM MutT, 1.3mM 8-oxo-dGMP, 15mM MgCl2, 4mM d11-Tris-HCl, pH 7.5, 21mM NaCl, 0.34mM NaN3.	90% H2O/10% D2O	21mM NaCl	7.5	ambient	295

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	UNITYPLUS	600

NMR Refinement
Method	Details	Software
simulated annealing torsion angle dynamics	the structures are based on 1746 NOE-derived distance constraints, 186 dihedral angle restraints derived from TALOS and 82 distance restraints from hydrogen bonds.	NMRPipe

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations
Conformers Calculated Total Number	50
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Additional NMR Experimental Information
Details	Sample condition 2 was used to measure residual dipolar couplings.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	NMRPipe	2.1	F. Delaglio
2	structure solution	CNS	1.1	A. Brunger et al.
3	data analysis	TALOS	1999.019.15.47	Cornilescu, Delaglio, and Bax
4	refinement	CNS	1.1	A. Brunger et al.

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.