Experiment: 1ITY

Solution structure of the DNA binding domain of human TRF1

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D HNHA, 3D HNHB, 3D Sequential assignment protocol, 3D_15N_separated_NOESY, 3D_13C_separated_NOESY, 2D NOESY, 2D TOCSY, 2D DQF-COSY	1.5-2.5mM TRF1 U-15N, 13C, 50mM phosphate buffer, 100mM NaCl	90% H2O, 10% D2O, 100% D2O		6.8	ambient	300

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

NMR Refinement
Method	Details	Software
distance geometry/simulated annealing	The structures are generated by 4D simulated annealing with EMBOSS, based on a total of 916 experimental restraints, 852 are NOE-derived distance restraints, 36 hydrogen restraints and 28 dihedral restraints. 25 out of 100 structures which have the lowest violation and a low energies were selected for the final set.	EMBOSS

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations
Conformers Calculated Total Number	100
Conformers Submitted Total Number	25
Representative Model	2 (closest to the average)

Additional NMR Experimental Information
Details	The structure was determined using triple-resonance NMR spectroscopy.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	EMBOSS	5.0	Nakai, T., Kidera, A., and Nakamura, H.