4EPK
Evidence for a Dual Role of an Active Site Histidine in alpha-Amino-beta-Carboxymuconate-epsilon-Semialdehyde Decarboxylase
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 8.75 | 298 | 15% PEG 5000, 0.1M Tris, 0.2M magnesium chloride, pH 8.75, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.4 | 48.74 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 91.504 | α = 90 |
b = 91.504 | β = 90 |
c = 170.123 | γ = 90 |
Symmetry | |
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Space Group | P 42 21 2 |
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 | MARMOSAIC 300 mm CCD | 2012-03-31 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 22-ID | 1.0 | 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 | 2.6 | 50 | 98.4 | 0.077 | 63.1 | 18.6 | 23294 | 22921 |
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) | |||||||||||
1 | 2.6 | 2.64 | 68.7 | 0.656 | 1.88 | 7.2 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Starting model | 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 | R-Free Selection Details | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | PDB ENTRY 2HBV | 2.6009 | 32.352 | 1.34 | 22859 | 1173 | 99.59 | 0.2115 | 0.2079 | 0.2813 | RANDOM |
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] | |
2.7707 | 2.7707 | -5.5413 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 15.351 |
f_angle_d | 1.204 |
f_chiral_restr | 0.083 |
f_bond_d | 0.009 |
f_plane_restr | 0.006 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 5153 |
Nucleic Acid Atoms | |
Solvent Atoms | 32 |
Heterogen Atoms | 3 |
Software
Software | |
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Software Name | Purpose |
HKL-2000 | data collection |
MOLREP | phasing |
PHENIX | refinement |
DENZO | data reduction |
SCALEPACK | data scaling |