1VKR
STRUCTURE OF IIB DOMAIN OF THE MANNITOL-SPECIFIC PERMEASE ENZYME II
SOLUTION NMR
NMR Experiment | ||||||||
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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 | |||
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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 | ||
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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 | |
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Conformer Selection Criteria | REGULARIZED MEAN STRUCTURE |
Conformers Calculated Total Number | 80 |
Conformers Submitted Total Number | 1 |
Computation: NMR Software | ||||
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# | Classification | Version | Software Name | Author |
1 | refinement | X-PLOR NIH | (HTTP://NMR.CIT.NIH.GOV/XPLOR_NIH) | SCHWIETERS, KUSZEWSKI, TJANDRA, CLORE |