2M5D
Solution Structure of the Bacillus cereus Metallo-Beta-Lactamase BcII in Complex with R-Thiomandelic Acid
SOLUTION NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | 2D 1H-15N HSQC | 1 mM [U-99% 15N] BcII-1, 1 mM R-Thiomandelic Acid-2, 20 mM MES-3, 100 mM sodium chloride-4 | 90% H2O/10% D2O | 120 | 6.4 | ambient | 308 | |
2 | 2D 1H-15N HSQC | 1 mM [U-99% 13C; U-99% 15N] BcII-5, 1 mM R-Thiomandelic Acid-6, 20 mM MES-7, 100 mM sodium chloride-8 | 90% H2O/10% D2O | 120 | 6.4 | ambient | 308 | |
3 | 2D 1H-13C HSQC aliphatic | 1 mM [U-99% 13C; U-99% 15N] BcII-5, 1 mM R-Thiomandelic Acid-6, 20 mM MES-7, 100 mM sodium chloride-8 | 90% H2O/10% D2O | 120 | 6.4 | ambient | 308 | |
4 | 2D 1H-13C HSQC aromatic | 1 mM [U-99% 13C; U-99% 15N] BcII-5, 1 mM R-Thiomandelic Acid-6, 20 mM MES-7, 100 mM sodium chloride-8 | 90% H2O/10% D2O | 120 | 6.4 | ambient | 308 | |
5 | 3D CBCA(CO)NH | 1 mM [U-99% 13C; U-99% 15N] BcII-5, 1 mM R-Thiomandelic Acid-6, 20 mM MES-7, 100 mM sodium chloride-8 | 90% H2O/10% D2O | 120 | 6.4 | ambient | 308 | |
6 | 3D HNCACB | 1 mM [U-99% 13C; U-99% 15N] BcII-5, 1 mM R-Thiomandelic Acid-6, 20 mM MES-7, 100 mM sodium chloride-8 | 90% H2O/10% D2O | 120 | 6.4 | ambient | 308 | |
7 | 3D HNCA | 1 mM [U-99% 13C; U-99% 15N] BcII-5, 1 mM R-Thiomandelic Acid-6, 20 mM MES-7, 100 mM sodium chloride-8 | 90% H2O/10% D2O | 120 | 6.4 | ambient | 308 | |
8 | 3D HN(CA)CO | 1 mM [U-99% 13C; U-99% 15N] BcII-5, 1 mM R-Thiomandelic Acid-6, 20 mM MES-7, 100 mM sodium chloride-8 | 90% H2O/10% D2O | 120 | 6.4 | ambient | 308 | |
9 | 3D HNCO | 1 mM [U-99% 13C; U-99% 15N] BcII-5, 1 mM R-Thiomandelic Acid-6, 20 mM MES-7, 100 mM sodium chloride-8 | 90% H2O/10% D2O | 120 | 6.4 | ambient | 308 | |
10 | 3D HCCH-TOCSY | 1 mM [U-99% 13C; U-99% 15N] BcII-5, 1 mM R-Thiomandelic Acid-6, 20 mM MES-7, 100 mM sodium chloride-8 | 90% H2O/10% D2O | 120 | 6.4 | ambient | 308 | |
11 | 3D HCCH-TOCSY | 1 mM [U-99% 13C; U-99% 15N] BcII-5, 1 mM R-Thiomandelic Acid-6, 20 mM MES-7, 100 mM sodium chloride-8 | 90% H2O/10% D2O | 120 | 6.4 | ambient | 308 | |
12 | 3D 1H-15N NOESY | 1 mM [U-99% 15N] BcII-1, 1 mM R-Thiomandelic Acid-2, 20 mM MES-3, 100 mM sodium chloride-4 | 90% H2O/10% D2O | 120 | 6.4 | ambient | 308 | |
13 | 3D 1H-13C NOESY aliphatic | 1 mM [U-99% 13C; U-99% 15N] BcII-5, 1 mM R-Thiomandelic Acid-6, 20 mM MES-7, 100 mM sodium chloride-8 | 90% H2O/10% D2O | 120 | 6.4 | ambient | 308 | |
14 | 3D 1H-13C NOESY aromatic | 1 mM [U-99% 13C; U-99% 15N] BcII-5, 1 mM R-Thiomandelic Acid-6, 20 mM MES-7, 100 mM sodium chloride-8 | 90% H2O/10% D2O | 120 | 6.4 | ambient | 308 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Bruker | AVANCE | 800 |
2 | Bruker | AVANCE | 600 |
3 | Bruker | AVANCE | 600 |
NMR Refinement | ||
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Method | Details | Software |
simulated annealing, torsion angle dynamics | The refinement protocol used consisted of five cycles of simulated annealing with a high start temperature (8000 K) and a gradual slow cooling to a low temperature (100 K) in a large number of steps (20,000). This standard torsion angle based simulating annealing protocol with all constraints applied simultaneously is combined with cycles of redundant dihedral angle constraints (REDAC; Guntert and Wuthrich, 1991). Several cycles of this combined refinement protocol, which eliminates violations and progressively reduces target function values while improving local and overall quality, were used to generate the final converged structures. Out of an ensemble of 100 converged structures generated, the 20 best (lowest CYANA target function during refinement) structures were selected. | CYANA |
NMR Ensemble Information | |
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Conformer Selection Criteria | structures with the lowest energy |
Conformers Calculated Total Number | 100 |
Conformers Submitted Total Number | 20 |
Representative Model | 1 (lowest energy) |
Computation: NMR Software | ||||
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# | Classification | Version | Software Name | Author |
1 | structure solution | CYANA | Guntert, Mumenthaler and Wuthrich | |
2 | refinement | CYANA | Guntert, Mumenthaler and Wuthrich | |
3 | structure solution | CANDID | Guntert, Mumenthaler and Wuthrich | |
4 | automated noe assignment | CANDID | Guntert, Mumenthaler and Wuthrich | |
5 | data analysis | Sparky | Goddard | |
6 | peak picking | Sparky | Goddard | |
7 | data analysis | MOLMOL | Koradi, Billeter and Wuthrich | |
8 | processing | NMRPipe | Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax | |
9 | collection | TopSpin | Bruker Biospin | |
10 | collection | XwinNMR | Bruker Biospin | |
11 | validation | ProcheckNMR | Laskowski and MacArthur | |
12 | validation | WHAT IF | Vriend | |
13 | processing | NMRDraw | Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax |