3MHZ
1.7A structure of 2-fluorohistidine labeled Protective Antigen
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1ACC | A lower resolution structure was initially solved from in-house diffraction data by molecular replacement using 1ACC as the starting model. The resulting model was then refined against the high resolution synchrotron data. |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION | 8.2 | 293 | 30% PEG 400, 0.1M Tris, pH 8.2, vapor diffusion, temperature 293K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.41 | 48.91 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 71.368 | α = 90 |
b = 93.975 | β = 90 |
c = 119.115 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 21 |
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 | ADSC QUANTUM 210r | 2009-08-12 | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 17-BM | 1.0000 | APS | 17-BM |
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 | 1.7 | 50 | 98.7 | 0.093 | 9.8 | 6.6 | 88352 | 88352 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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) | |||||||||||
1.7 | 1.76 | 89.5 | 0.589 | 1.897 | 4.7 | 7898 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Work | R-Free | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | Direct Replacement | THROUGHOUT | A lower resolution structure was initially solved from in-house diffraction data by molecular replacement using 1ACC as the starting model. The resulting model was then refined against the high resolution synchrotron data. | 1.7 | 50 | 87519 | 87519 | 4400 | 98.669 | 0.1917 | 0.2217 | 27.856 |
Temperature Factor Modeling | ||||||
---|---|---|---|---|---|---|
Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
-1.809 | -0.604 | 2.413 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 41.155 |
r_dihedral_angle_3_deg | 13.972 |
r_dihedral_angle_4_deg | 12.072 |
r_dihedral_angle_1_deg | 6.435 |
r_scangle_it | 3.852 |
r_scbond_it | 2.452 |
r_scangle_other | 1.866 |
r_angle_refined_deg | 1.733 |
r_mcangle_it | 1.583 |
r_angle_other_deg | 0.956 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 5281 |
Nucleic Acid Atoms | |
Solvent Atoms | 400 |
Heterogen Atoms | 15 |
Software
Software | |
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Software Name | Purpose |
DENZO | data reduction |
SCALEPACK | data scaling |
MOLREP | phasing |
REFMAC | refinement |
PDB_EXTRACT | data extraction |
HKL-2000 | data reduction |
HKL-2000 | data scaling |