2HTF | pdb_00002htf

The solution structure of the BRCT domain from human polymerase reveals homology with the TdT BRCT domain

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_13C-separated_NOESY	1mM polymerase mu BRCT domain, 25 mM d-Tris, 50 mM KCl, 0.02% NaN3, 5 mM DTT, pH 7.9, 90% H2O, 10% D2O	90% H2O/10% D2O	50 mM KCl	7.9	ambient	283
2	3D_15N-separated_NOESY	1mM polymerase mu BRCT domain, 25 mM d-Tris, 50 mM KCl, 0.02% NaN3, 5 mM DTT, pH 7.9, 90% H2O, 10% D2O	90% H2O/10% D2O	50 mM KCl	7.9	ambient	283

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	600
2	Varian	INOVA	800

NMR Refinement
Method	Details	Software
Torsion angle dynamics followed by molecular dynamics refinement in explicit water solvent	The initial structures were computed using the auto noeassign feature of CYANA 2.1; 1503 NOE distance restraints were assigned, and 147 dihedral angle restraints were used in the calculation. The 20 best CYANA structures were refined in explicit solvent using ARIA 2.0a with the 1506 NOE distance restraints, 147 dihedral angle restraints, 42 H-bond restraints, and 48 residual dipolar coupling restraints.	VNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	11
Representative Model	1 (minimized average structure)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	VNMR	1.1C, VNMRJ 1.1C	Varian
2	processing	NMRPipe	2003, 2004	Delaglio, Grzesiek, Vuister, Zhu, Pfeifer, and Bax
3	processing	NMRView	5.0.4	Johnson and Blevins
4	structure solution	CYANA	2.1	Guentert, Mumenthaler, Herrmann, and Wuthrich
5	refinement	ARIA	2.0a	Habeck, Rieping, Linge, and Nilges