Experiment: 1VKR

STRUCTURE OF IIB DOMAIN OF THE MANNITOL-SPECIFIC PERMEASE ENZYME II

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	1) TRIPLE RESONANCE FOR ASSIGNMENT OF PROTEIN			40 mM SODIUM PHOSPHATE	7.1		308.00
2	(2) QUANTITATIVE J CORRELATION FOR COUPLING CONSTANTS			40 mM SODIUM PHOSPHATE	7.1		308.00
3	(3) 3D, 4D HETERONUCLEAR SEPARATED NOE EXPTS			40 mM SODIUM PHOSPHATE	7.1		308.00
4	(4) IPAP and COUPLED HSQC EXPERIMENTS FOR DIPOLAR COUPLINGS. DIPOLAR COUPLINGS WERE MEASURED IN PEG/HEXANOL			40 mM SODIUM PHOSPHATE	7.1		308.00

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DMX500	500
2	Bruker	DMX600	600
3	Bruker	DRX600	750
4	Bruker	DMC750	800
5	Bruker	DRX800	800

NMR Refinement
Method	Details	Software
torsion angle dynamics	THE TARGET FUNCTION COMPRISES TERMS FOR THE NOE-DERIVED INTERPROTON DISTANCE RESTRAINTS, TORSION ANGLE RESTRAINTS, 3JHN-HALPHA COUPLING CONSTANT RESTRAINTS, 13CALPHA/BETA CHEMICAL SHIFT RESTRAINTS, AND RESIDUAL DIPOLAR COUPLING RESTRAINTS (N-H, N-C' AND HN-C'); A QUARTIC VAN DER WAALS REPULSION TERM, TORSION ANGLE AND HYDROGEN BONDING DATABASE POTENTIALS OF MEAN FORCE, AND A RADIUS OF GYRATION RESTRAINTS. IN THIS ENTRY THE LAST COLUMN REPRESENTS THE AVERAGE RMS DIFFERENCE BETWEEN THE INDIVIDUAL SIMULATED BEST-FITTED TO RESIDUES 375-471. ONLY RESIDUES 375-471 ARE SHOWN SINCE RESIDUES 365-374 AND 472-489 AT THE N- AND C-TERMINI RESPECTIVELY, ARE DISORDERED IN SOLUTION. EXPERIMENTAL RESTRAINTS: 1444 INTERPROTON DISTANCE RESTRAINTS: (90 INTRARESIDUE; 419 SEQUENTIAL, 347 MEDIUM-RANGE, AND 517 LONG-RANGE INTERRESIDUE; 50 SEQUENTIAL/MEDIUM-RANGE AMBIGUOUS; 21 LONG-RANGE AMBIGUOUS 110 DISTANCE RESTRAINTS FOR 55 BACKBONE H-BONDS 214 TORSION ANGLE RESTRAINTS (90 PHI, 94 PSI, 68 CHI) 189 CALPHA/CBETA CHEMICAL SHIFT RESTRAINTS 70 3JHN-HA COUPLING CONSTANT RESTRAINTS 200 RESIDUAL DIPOLAR COUPLING RESTRAINTS (74 N-H, 62 N-C', 64 HN-C') DIPOLAR COUPLING R-FACTORS: N-H 2.8% N-C' 14.9% HN-C' 13.5%	X-PLOR NIH

NMR Ensemble Information
Conformer Selection Criteria	REGULARIZED MEAN STRUCTURE
Conformers Calculated Total Number	80
Conformers Submitted Total Number	1

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	X-PLOR NIH	(HTTP://NMR.CIT.NIH.GOV/XPLOR_NIH)	SCHWIETERS, KUSZEWSKI, TJANDRA, CLORE