3VND
Crystal structure of tryptophan synthase alpha-subunit from the psychrophile Shewanella frigidimarina K14-2
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1V7Y | PDB ENTRY 1V7Y |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 7.5 | 277 | 2.0M Ammonium sulfate, 0.1M HEPES-NaOH (pH 7.5), 2% (w/v) PEG 400, VAPOR DIFFUSION, SITTING DROP, temperature 277K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.38 | 63.57 |
Crystal Data
Unit Cell | |
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Length ( ? ) | Angle ( ? ) |
a = 181.136 | ¦Á = 90 |
b = 182.779 | ¦Â = 90 |
c = 181.795 | ¦Ã = 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 | 100 | CCD | Bruker DIP-6040 | 2009-10-20 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SPRING-8 BEAMLINE BL44XU | 1.0 | SPring-8 | BL44XU |
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 | 2.6 | 50 | 99.5 | 0.136 | 10.4 | 92082 |
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 | 2.6 | 2.64 | 98.8 | 0.377 | 2.22 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 ENTRY 1V7Y | 2.6 | 48.79 | 87470 | 4603 | 99.35 | 0.17472 | 0.17281 | 0.21094 | RANDOM | 31.832 |
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] | |
0.69 | 0.74 | -1.43 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 42.358 |
r_dihedral_angle_4_deg | 23.762 |
r_dihedral_angle_3_deg | 23.214 |
r_dihedral_angle_1_deg | 8.318 |
r_scangle_it | 5.696 |
r_scbond_it | 3.8 |
r_mcangle_it | 2.174 |
r_angle_refined_deg | 2.126 |
r_mcbond_it | 1.287 |
r_angle_other_deg | 1.08 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 15256 |
Nucleic Acid Atoms | |
Solvent Atoms | 1187 |
Heterogen Atoms | 190 |
Software
Software | |
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Software Name | Purpose |
HKL-2000 | data collection |
MOLREP | phasing |
REFMAC | refinement |
HKL-2000 | data reduction |
HKL-2000 | data scaling |