1GUW | pdb_00001guw

STRUCTURE OF THE CHROMODOMAIN FROM MOUSE HP1beta IN COMPLEX WITH THE LYSINE 9-METHYL HISTONE H3 N-TERMINAL PEPTIDE, NMR, 25 STRUCTURES

SOLUTION NMR

---

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D	150 mM NACL, 20 mM PHOSPHATE BUFFER, 10% D2O			5.5	1 atm	298
2	3D 1H	150 mM NACL, 20 mM PHOSPHATE BUFFER, 10% D2O			5.5	1 atm	298
3	15N	150 mM NACL, 20 mM PHOSPHATE BUFFER, 10% D2O			5.5	1 atm	298
4	13C	150 mM NACL, 20 mM PHOSPHATE BUFFER, 10% D2O			5.5	1 atm	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	600
2	Bruker	DRX	800

NMR Refinement
Method	Details	Software
simulated annealing		ARIA

NMR Ensemble Information
Conformer Selection Criteria	LOWEST ENERGY OF 75 CONVERGED STRUCTURES
Conformers Calculated Total Number	100
Conformers Submitted Total Number	25
Representative Model	1 (n/a)

Additional NMR Experimental Information

Details

THE STRUCTURE WAS DETERMINED USING TRIPLE-RESONANCE 2D AND 3D NMR SPECTROSCOPY ON 13C, 15N-LABELED PROTEIN. FOR PROTEIN ASSIGMENTS THE SAMPLE CONTAINED AN EXCESS OF 1.2 FOLD OF UNLABELLED PEPTIDE. THE PEPTIDE WAS ASSIGNED USING 13C, 15N REJECTED NOESY AND TOCSY EXPERIMENTS ON A SAMPLE OF EXCESS 13C, 15N LABELLED PROTEIN TO UNLABELLED PEPTIDE. THE METHYL GROUP RESONANCES OF LYSINE 4 AND 9 OF THE PEPTIDE WERE CONFIRMED WITH THE HELP OF A 13C METHYL-SELECTIVELY LABELLED SAMPLE MIXED WITH UNLABELLED PROTEIN. INTERMOLECULAR CONTACTS WERE OBTAINED FROM A 13C/15N X-FILTERED NOESY SPECTRUM AND A 3D J(CH,NH)- SEPARATED NOESY SPECTRUM

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	ARIA		J.P.LINGE,S.I.O'DONOGHUE,M.NILGES
2	structure solution	Azara
3	structure solution	ANSIG
4	structure solution	ARIA
5	structure solution	CNS