1Q6X
Crystal structure of rat choline acetyltransferase
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1NDB | PDB entry 1NDB |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 6.5 | 277 | PEG 20000, (2-(N-Morpholino)ethanesulfonic acid, sodium chloride, 2-mercaptoethanol, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.18 | 61.27 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 84.701 | α = 90 |
b = 78.882 | β = 98.38 |
c = 139.364 | γ = 90 |
Symmetry | |
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Space Group | P 1 21 1 |
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 | 110 | CCD | MARRESEARCH | double crystal focusing mirror | 2002-11-23 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 22-ID | 0.97934 | APS | 22-ID |
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 | 2.5 | 30 | 0.075 | 8.1 | 3.8 | 62300 | 62219 | -4 | -4 | 38.3 |
Highest Resolution Shell | |||||||||||||||||||
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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) | |||||||||||
2.5 | 2.59 | 95.2 | 0.337 | 3.9 | 3.76 | 6012 |
Refinement
Statistics | |||||||||||||||||||
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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-Factor (All) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | PDB entry 1NDB | 2.5 | 28.94 | 62034 | 62033 | 6279 | 98.1 | 0.226 | 0.226 | 0.223 | 0.251 | RANDOM | 30.7 |
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] | |
7.56 | 0.24 | -3.67 | -3.89 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_dihedral_angle_d | 21.9 |
c_mcangle_it | 11.21 |
c_mcbond_it | 10.21 |
c_scbond_it | 7.22 |
c_scangle_it | 6.7 |
c_angle_deg | 1.2 |
c_improper_angle_d | 0.84 |
c_bond_d | 0.008 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 9334 |
Nucleic Acid Atoms | |
Solvent Atoms | 345 |
Heterogen Atoms | 2 |
Software
Software | |
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Software Name | Purpose |
CNS | refinement |
HKL-2000 | data reduction |
SCALEPACK | data scaling |
CNS | phasing |