2J0Q
The crystal structure of the Exon Junction Complex at 3.2 A resolution
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | 10% PEG 4000, 200 MM AMMONIUM ACETATE, 10 MM CACL2, NA CACODYLATE PH 6.5 . |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.7 | 55.5 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 69.15 | α = 90 |
b = 161.24 | β = 90 |
c = 193.24 | 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 | MARRESEARCH | 2006-06-17 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SLS BEAMLINE X06SA | SLS | X06SA |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | R Sym 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 | 3.2 | 50 | 95.4 | 0.24 | 0.24 | 4.8 | 3.1 | 34926 | 2 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
1 | 3.2 | 3.4 | 97.2 | 0.68 | 0.68 | 2 | 3.1 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | PDB ENTRIES 1FUU, 1FUK, AND 1P27 | 3.2 | 46.98 | 33179 | 1747 | 100 | 0.235 | 0.232 | 0.277 | RANDOM | 66.93 |
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] | |
0.67 | -0.81 | 0.14 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 36.345 |
r_dihedral_angle_3_deg | 18.051 |
r_dihedral_angle_4_deg | 16.657 |
r_dihedral_angle_1_deg | 6.772 |
r_angle_refined_deg | 1.287 |
r_scangle_it | 1.078 |
r_angle_other_deg | 0.815 |
r_mcangle_it | 0.631 |
r_scbond_it | 0.588 |
r_mcbond_it | 0.387 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 10919 |
Nucleic Acid Atoms | 242 |
Solvent Atoms | 1 |
Heterogen Atoms | 64 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
XDS | data reduction |
XSCALE | data scaling |
PHASER | phasing |