Experiment: 1Z60

Solution structure of the carboxy-terminal domain of human TFIIH P44 subunit

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_15N-edited TOCSY and NOESY	1mM p44 U-15N; 20mM deuterated TrisHCl buffer, 20mM NaCl and 0.5mM DTT	90% H2O/10% D2O		7	ambient	293
2	3D_15N-edited TOCSY and NOESY	1mM p44 U-15N; 20mM deuterated TrisHCl buffer, 20mM NaCl and 0.5mM DTT	90% H2O/10% D2O		7	ambient	303
3	2D TOCSY and NOESY	0.5mM p44; 20mM deuterated TrisHCl buffer, 20mM NaCl and 0.5mM DTT	90% H2O/10% D2O		7	ambient	303
4	HSQC	1mM p44 U-15N; 20mM deuterated TrisHCl buffer, 20mM NaCl and 0.5mM DTT	90% H2O/10% D2O		7	ambient	293

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	600

NMR Refinement
Method	Details	Software
simulated annealing	Automated assignment of the NOE was performed, The structures are based on 1294 unambiguous NOE-derived distance constraints, 32 dihedral angle restraints and 17 distance restraints from hydrogen bonds. Geometry of the zinc binding site II is distorded due to conformational exchange averaging.	ARIA / CNS

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	50
Conformers Submitted Total Number	10
Representative Model	1 (the best geometry)

Additional NMR Experimental Information
Details	113Cd-1H HSQC spectrum was recorded using a broadband z-gradient probe at 293 K

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	ARIA / CNS	1.2.	Nilges
2	refinement	XPLOR-NIH	2.0.6
3	data analysis	XEASY	1.2	Bartels
4	processing	XwinNMR	2.6	bruker