1BJN
STRUCTURE OF PHOSPHOSERINE AMINOTRANSFERASE FROM ESCHERICHIA COLI
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 277 | PROTEIN WAS CRYSTALLIZED AT 4-7 DEGREES CELSIUS BY HANGING DROP METHOD, USING PEG4000 AS A PRECIPITATING AGENT, BUFFERED WITH SODIUM ACETATE TO PH 7.2 IN THE DROP AND PH 5.6 IN THE RESERVOIR. THE PH-GRADIENT WAS ESSENTIAL FOR THE CRYSTALLIZATION., vapor diffusion - hanging drop, temperature 277K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.7 | 52 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 68.74 | α = 90 |
b = 94.74 | β = 90 |
c = 133.64 | 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 | 277 | IMAGE PLATE | MARRESEARCH | 1996-01-06 | M |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | ELLIOTT GX-20 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (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 | 2.3 | 32.5 | 98.2 | 0.083 | 14.7 | 4.5 | 38831 | 29.8 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
2.3 | 2.38 | 99.9 | 0.474 | 3.3 | 4.4 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | 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 | MIRAS | THROUGHOUT | 2.3 | 32.5 | 38831 | 1945 | 98.3 | 0.175 | 0.175 | 0.201 | RANDOM | 33 |
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] | |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
x_dihedral_angle_d | 24 |
x_scangle_it | 5.63 |
x_scbond_it | 3.65 |
x_mcangle_it | 2.91 |
x_mcbond_it | 1.85 |
x_angle_deg | 1.3 |
x_improper_angle_d | 1.16 |
x_bond_d | 0.008 |
x_bond_d_na | |
x_bond_d_prot |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 5609 |
Nucleic Acid Atoms | |
Solvent Atoms | 241 |
Heterogen Atoms | 30 |
Software
Software | |
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Software Name | Purpose |
X-PLOR | model building |
X-PLOR | refinement |
DENZO | data reduction |
SCALEPACK | data scaling |
X-PLOR | phasing |