1WCR
Trimeric Structure of the Enzyme IIA from Escherichia coli Phosphotransferase System Specific for N,N'-Diacetylchitobiose
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | (1) TROSY TRIPLE RESONANCE FOR ASSIGNMENT OF PROTEIN | 10MM SODIUM PHOSPHATE | 6.5 | 1.0 atm | 303.0 | |||
| 2 | (2) QUANTITATIVE J CORRELATION FOR SIDECHAIN COUPLING CONSTANTS | 10MM SODIUM PHOSPHATE | 6.5 | 1.0 atm | 303.0 | |||
| 3 | (3) 3D | 10MM SODIUM PHOSPHATE | 6.5 | 1.0 atm | 303.0 | |||
| 4 | 4D HETERONUCLEAR SEPARATED NOE EXPTS | 10MM SODIUM PHOSPHATE | 6.5 | 1.0 atm | 303.0 | |||
| 5 | (4) TROSY HNCO AND HN(CO)CA EXPERIMENTS FOR DIPOLAR COUPLINGS. DIPOLAR COUPLINGS WERE MEASURED IN PF1 PHAGE | 10MM SODIUM PHOSPHATE | 6.5 | 1.0 atm | 303.0 | |||
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | DMX | 500 |
| 2 | Bruker | DMX | 600 |
| 3 | Bruker | DRX | 600 |
| 4 | Bruker | DMX | 750 |
| 5 | Bruker | DRX | 800 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| SIMULATED ANNEALING IN TORSION ANG SPACE | THE TARGET FUNCTION COMPRISES TERMS FOR THE NOE-DERIVED INTERPROTON DISTANCE RESTRAINTS, TORSION ANGLE RESTRAINTS, 13CALPHA/BETA CHEMICAL SHIFT RESTRAINTS, AND RESIDUAL DIPOLAR COUPLING RESTRAINTS (N-H, N-C' AND C'-CA). NON-BONDED INTERACTIONS ARE REPRESENTED BY A QUARTIC VAN DER WAALS REPULSION TERM, TORSION ANGLE AND HYDROGEN BONDING DATABASE POTENTIALS OF MEAN FORCE, AND A RADIUS OF GYRATION RESTRAINT. IN THIS ENTRY THE LAST COLUMN REPRESENTS THE AVERAGE ATOMIC RMS DIFFERENCE IN ANGSTROMS BETWEEN THE 80 INDIVIDUAL SIMULATED ANNEALING STRUCTURES AND THE MEAN COORDINATES RESIDUES 1-3, 61-69 AND 102-103 ARE DISORDERED IN SOLUTION. | XPLOR-NIH (HTTP://NMR.CIT.NIH.GOV/XPLOR_NIH) (HTTP://NMR.CIT.NIH.GOV/XPLOR_NIH) |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | RESTRAINED REGULARIZED MEAN STRUCTURE |
| Conformers Calculated Total Number | 100 |
| Conformers Submitted Total Number | 1 |
| Additional NMR Experimental Information | |
|---|---|
| Details | EXPERIMENTAL RESTRAINTS: 1290 INTERPROTON DISTANCE RESTRAINTS: 246 SEQUENTIAL, 258 MEDIUM-RANGE, 90 LONG-RANGE INTRAMOLECULAR RESTRAINTS; 234 INTERMOLECULAR DISTANCE RESTRAINTS; 462 DISTANCE RESTRAINTS FOR BACKBONE H-BONDS FOR 231 H-BONDS (71 PER SUBUNIT) 729 TORSION ANGLE RESTRAINTS (255 PHI, 255 PSI, 219 CHI) 585 CALPHA/CBETA CHEMICAL SHIFT RESTRAINTS 759 RESIDUAL DIPOLAR COUPLING RESTRAINTS (252 N-H, 255 N-C', 249 C'-CA) DIPOLAR COUPLING R-FACTORS FOR THE RESTRAINED REGULARIZED MEAN STRUCTURE N-H 7.1% N-C' 15.2% C'-CA 17.7% |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | refinement | XPLOR-NIH (HTTP://NMR.CIT.NIH.GOV/XPLOR_NIH) (HTTP://NMR.CIT.NIH.GOV/XPLOR_NIH) | (HTTP://NMR.CIT.NIH.GOV/XPLOR_NIH) | SCHWIETERS, KUSZEWSKI, TJ |
| 2 | structure solution | XPLOR-NIH | ||
