4A52
NMR structure of the imipenem-acylated L,D-transpeptidase from Bacillus subtilis
SOLUTION NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | 13C-HSQC-NOESY | 90% H2O/10% D2O | 0.15 | 6.5 | 1.0 atm | 298.0 | ||
2 | 1H-15N- HSQC | 90% H2O/10% D2O | 0.15 | 6.5 | 1.0 atm | 298.0 | ||
3 | 1H -13C-HSQC | 90% H2O/10% D2O | 0.15 | 6.5 | 1.0 atm | 298.0 | ||
4 | 13C- HSQC-NOESY METHYL SELECTIVE | 90% H2O/10% D2O | 0.15 | 6.5 | 1.0 atm | 298.0 | ||
5 | 15N-HSQC-NOESY | 90% H2O/10% D2O | ||||||
6 | 1H-15N- HMQC OPTIMIZED FOR IMIDAZOLE RING OF HISTIDINES | 90% H2O/10% D2O | ||||||
7 | HNCO | 90% H2O/10% D2O | ||||||
8 | HNCACB | 90% H2O/10% D2O | ||||||
9 | 1H- 13C-HSQC CENTERED ON AROMATICS | 90% H2O/10% D2O | ||||||
10 | 13C-HSQC-NOESY CENTERED ON AROMATICS | 90% H2O/10% D2O |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Bruker | Avance | 900 |
2 | Bruker | Avance | 800 |
3 | Varian | INOVA | 600 |
NMR Refinement | ||
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Method | Details | Software |
ITERATIVE STRUCTURE CALCULATION WITH ARIA2.3 | REFINEMENT IN WATER AFTER 8 ITERATIONS. | CNS1.2 |
NMR Ensemble Information | |
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Conformer Selection Criteria | STRUCTURE WITH THE LOWEST ENERGY |
Conformers Calculated Total Number | 20 |
Conformers Submitted Total Number | 20 |
Representative Model | 1 (n/a) |
Additional NMR Experimental Information | |
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Details | THE 20 NMR STRUCTURES WERE DETERMINED USING TRIPLE- RESONANCE NMR SPECTROSCOPY ON A 13C, 15N-LABELED LDTBS SAMPLE INCUBATED WITH 2.5 EQUIVALENTS OF IMIPENEM ANTIBIOTIC. THESE STRUCTURES WERE REFINED WITH RDCS, AND REFINED IN WATER WITHIN CNS ARIA. |
Computation: NMR Software | ||||
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# | Classification | Version | Software Name | Author |
1 | refinement | CNS1.2 | BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,READ, RICE,SIMONSON,WARREN | |
2 | structure solution | CNS | 1.2 | |
3 | structure solution | TALOS ANY | ANY | |
4 | structure solution | UNIO | 10 | |
5 | structure solution | NMRDRAW ANY | ANY | |
6 | structure solution | NMRPIPE ANY | ANY | |
7 | structure solution | CCPNMR ANALYSIS | 2.2 |