4DBC
Substrate Activation in Aspartate Aminotransferase
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7.5 | 293 | 2 uL of protein solution(15-20 mg/ml, 50 mM TEA, pH 7.5, 100 mM KCL, 2 mM DTT, 10 mM deaza-PLP, 50 mM L-aspartate) mixed with 2 uL reservoir buffer (53-60% saturated ammonium sulfate and 50 mM TEA), VAPOR DIFFUSION, HANGING DROP, temperature 293K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.93 | 57.98 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 84.29 | α = 90 |
b = 155.25 | β = 90 |
c = 77.96 | γ = 90 |
Symmetry | |
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Space Group | C 2 2 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 | CCD | MARMOSAIC 325 mm CCD | 2010-02-03 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL9-2 | SSRL | BL9-2 |
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 | 1.5 | 28.617 | 98.7 | 0.038 | 0.038 | 17.7 | 4.24 | 81931 | 80890 | -3 |
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 | 1.5 | 1.54 | 93.9 | 0.543 | 0.543 | 2.03 | 2.73 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | Mean Isotropic B | ||||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | 1.5 | 28.617 | 1.35 | 80854 | 4061 | 98.74 | 0.1704 | 0.1692 | 0.1935 |
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] | |
1.3233 | -0.8079 | -0.5153 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 12.866 |
f_angle_d | 1.607 |
f_chiral_restr | 0.115 |
f_bond_d | 0.016 |
f_plane_restr | 0.01 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 3065 |
Nucleic Acid Atoms | |
Solvent Atoms | 447 |
Heterogen Atoms | 48 |
Software
Software | |
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Software Name | Purpose |
MOLREP | phasing |
PHENIX | refinement |
DENZO | data reduction |
SCALA | data scaling |