1I5Q
CRYSTAL STRUCTURE OF THE E. COLI AMPC BETA-LACTAMASE MUTANT N152A COVALENTLY ACYLATED WITH THE INHIBITORY BETA-LACTAM, MOXALACTAM
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 8.7 | 296 | potassium phosphate, AmpC N152A, pH 8.7, VAPOR DIFFUSION, HANGING DROP, temperature 296K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.5 | 50.9 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 117.661 | α = 90 |
b = 77.267 | β = 116.75 |
c = 97.677 | γ = 90 |
Symmetry | |
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Space Group | C 1 2 1 |
Diffraction
Diffraction Experiment | ||||||||||||||
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ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | CCD | MARRESEARCH | 2000-08-20 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 5ID-B | 1.00 | APS | 5ID-B |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | Net I Over Average Sigma (I) | Redundancy | Number Reflections (All) | Number Reflections (Observed) | Observed Criterion Sigma (F) | Observed Criterion Sigma (I) | B (Isotropic) From Wilson Plot | ||||||||
1 | 1.83 | 20 | 99.8 | 0.051 | 22.08 | 3.99 | 68795 | 274720 | -3 | 21.732 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
1 | 1.83 | 1.87 | 99.9 | 0.409 | 1.69 | 4551 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (I) | Cut-off Sigma (F) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | |||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | PDB Entry 1C3B with inhibitor, solvent, and N152 sidechain atoms (beyond C-beta) removed | 1.83 | 20 | 2 | 2 | 59388 | 59388 | 1813 | 99.8 | 0.1681 | 0.2056 | random |
Temperature Factor Modeling | ||||||
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Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_angle_deg | 1.72 |
c_bond_d | 0.0139 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 5580 |
Nucleic Acid Atoms | |
Solvent Atoms | 394 |
Heterogen Atoms | 58 |
Software
Software | |
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Software Name | Purpose |
CNS | refinement |
DENZO | data reduction |
SCALEPACK | data scaling |
CNS | phasing |