2MC3

NMR solution structure of the winged-helix domain from MUS81 structure-specific endonuclease

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D 15N NOESY-HSQC	1 MM MUS81-WINGED HELIX DOMAIN, 25 MM SODIUM PHOSPHATE, 250 MM SODIUM CHLORIDE, 1 MM EDTA, 1MM DTT pH7	90% H2O/10% D2O	250	7.0	AMBIENT	298
2	3D 13C NOESY HSQC	MUS81-WINGED HELIX DOMAIN, 25 MM SODIUM PHOSPHATE, 250 MM SODIUM CHLORIDE, 1 MM EDTA, 1 MM DTT, pH7	100% D2O	250	7.0	AMBIENT	298
3	3D 13C AROMATIC NOESY-HSQ 2D IPAP	MUS81-WINGED HELIX DOMAIN, 25 MM SODIUM PHOSPHATE, 250 MM SODIUM CHLORIDE, 1 MM EDTA, 1 MM DTT, pH7	100% D2O	250	7.0	AMBIENT	298
4	2D 1H-15N HSQC	1 MM MUS81-WINGED HELIX DOMAIN, 25 MM SODIUM PHOSPHATE, 250 MM SODIUM CHLORIDE, 1 MM EDTA, 1MM DTT pH7	90% H2O/10% D2O	250	7.0	AMBIENT	298
5	2D 1H-13C HSQC	MUS81-WINGED HELIX DOMAIN, 25 MM SODIUM PHOSPHATE, 250 MM SODIUM CHLORIDE, 1 MM EDTA, 1 MM DTT, pH7	100% D2O	250	7.0	AMBIENT	298
6	3D HNCO	25 mM Na phosphate buffer, 250 mM NaCl, 1 mM EDTA, 1mM DTT, pH7.0	90% H2O/10% D2O	250	7.0	AMBIENT	298
7	2D 1H-13C AROMATIC HSQC	MUS81-WINGED HELIX DOMAIN, 25 MM SODIUM PHOSPHATE, 250 MM SODIUM CHLORIDE, 1 MM EDTA, 1 MM DTT, pH7	100% D2O	250	7.0	AMBIENT	298
8	2D IPAP	1 MM MUS81-WINGED HELIX DOMAIN, 25 MM SODIUM PHOSPHATE, 250 MM SODIUM CHLORIDE, 1 MM EDTA, 1 MM DTT, pH7, 5%n-octyl-penta(ethyleneglycol):octanol 0.96:1	90% H2O/10% D2O	250	7.0	AMBIENT	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	UNITYPLUS	500

NMR Refinement
Method	Details	Software
SIMULATED ANNEALING, SIMULATED ANNEALING	AB INITIO SIMULATED ANNEALING PROTOCOL WITHIN THE CNS PROGRAM, WITH PARALLHDGV5.3 FORCE FIELD AND PROLS NON-BONDED ENERGY FUNCTION. THIS PROTOCOL ADOPTS A MIXTURE OF CARTESIAN MOLECULAR DYNAMICS AND TORSION ANGLE DYNAMICS SIMULATE ANNEALING. INCLUDING RDC RESTRAINTS., AB INITIO SIMULATED ANNEALING PROTOCOL WITHIN THE CNS PROGRAM, WITH PARALLHDGV5.3 FORCE FIELD AND PROLS NON-BONDED ENERGY FUNCTION. THIS PROTOCOL ADOPTS A MIXTURE OF CARTESIAN MOLECULAR DYNAMICS AND TORSION ANGLE DYNAMICS SIMULATE ANNEALING. INCLUDING RDC RESTARINTS.	CNS

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	200
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	CNS		BRUNGER, A.T. ET AL.
2	structure solution	ANSIG		Boucher