Experiment: 1D1D

NMR SOLUTION STRUCTURE OF THE CAPSID PROTEIN FROM ROUS SARCOMA VIRUS

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	4D_13C-SEPARATED_NOESY	~1 MM CA_RSV, 10 MM PHOSPHATE (PH 6.0), 0.2 MM N3NA, 0.1 MM EDTA, 0.1 MM PMSF, 1 MG/L PEPSTATIN A, 5 MM BETA-MERCAPTOETHANOL	90% H2O/10% D2O	10 mM PHOSPHATE	6.00	1 atm	303.00
2	4D_13C/15N-SEPARATED_ NOESY	~1 MM CA_RSV, 10 MM PHOSPHATE (PH 6.0), 0.2 MM N3NA, 0.1 MM EDTA, 0.1 MM PMSF, 1 MG/L PEPSTATIN A, 5 MM BETA-MERCAPTOETHANOL	90% H2O/10% D2O	10 mM PHOSPHATE	6.00	1 atm	303.00
3	4D_15N-SEPARATED_ NOESY	~1 MM CA_RSV, 10 MM PHOSPHATE (PH 6.0), 0.2 MM N3NA, 0.1 MM EDTA, 0.1 MM PMSF, 1 MG/L PEPSTATIN A, 5 MM BETA-MERCAPTOETHANOL	90% H2O/10% D2O	10 mM PHOSPHATE	6.00	1 atm	303.00
4	3D_15N- SEPARATED_NOESY	~1 MM CA_RSV, 10 MM PHOSPHATE (PH 6.0), 0.2 MM N3NA, 0.1 MM EDTA, 0.1 MM PMSF, 1 MG/L PEPSTATIN A, 5 MM BETA-MERCAPTOETHANOL	90% H2O/10% D2O	10 mM PHOSPHATE	6.00	1 atm	303.00

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

NMR Refinement
Method	Details	Software
TORSION ANGLE DYNAMICS SIMULATED ANNEALING	20 CONFORMERS COMPATIBLE WITH THE NMR CONSTRAINTS WERE CALCULATED USING DYANA 1.5 AND THE STANDARD TORSION ANGLE SIMULATED ANHEALING PROTOCOL. PRELIMINARY CALCULATIONS WERE CARRIED OUT INDEPENDENTLY FOR EACH OF THE TWO N- AND C- TERMINAL DOMAINS OF THE PROTEIN. INITIALLY ONLY NOE DISTANCE CONSTRAINTS WERE IMPOSED. THE INITIAL STRUCTURES WERE THEN USED TO ASSES THE ACCURACY OF THE TORSION ANGLE CONSTRAINTS GENERATED BY ANALYSIS OF HA, CA, CB, CO AND N CHEMICAL SHIFTS WITH THE PROGRAM TALOS. FINALLY, UPPER AND LOWER LIMIT DISTANCE CONSTRAINTS WERE IMPOSED FOR UNAMBIGUOUS INTRAHELICAL H-BONDS.	DYANA

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	20
Conformers Submitted Total Number	20
Representative Model	7 (n/a)

Additional NMR Experimental Information
Details	THE 1H, 13C, AND 15N CHEMICAL SHIFT ASSIGNMENTS HAVE BEEN DEPOSITED ATTHE BIOMOLECULAR RESONANCE DATABANK (BMRB ENTRY 4384).

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	DYANA	1.5	P.GUNTHER, ETH-ZURICH
2	structure solution	XwinNMR	2.5
3	structure solution	NMRPipe	1999
4	structure solution	NMRView	3.0
5	structure solution	TALOS	1999.019.15.47