2IVG
SITE DIRECTED MUTAGENESIS OF KEY RESIDUES INVOLVED IN THE CATALYTIC MECHANISM OF CYANASE
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 7.3 | CRYSTALLIZATION CONDITIONS: CRYSTALS WERE GROWN BY THE SITTING DROP METHOD OF VAPOUR DIFFUSION FROM 50% AMMONIUM SULPHATE SOLUTIONS BUFFERED WITH 50MM NAKPO4, PH = 7.3, AND IN THE PRESENCE OF 50 MM TRIC/HCL, PH =7.3. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.67 | 54 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 78.392 | α = 70.69 |
b = 80.897 | β = 75.98 |
c = 81.094 | γ = 65.15 |
Symmetry | |
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Space Group | P 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 | 100 | CCD | ADSC CCD | MIRRORS | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 19-ID | APS | 19-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 | 1.87 | 99 | 95.1 | 0.03 | 23.6 | 2.1 | 133334 |
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 | 1.87 | 1.93 | 90.7 | 0.11 | 6 | 1.8 |
Refinement
Statistics | |||||||||||||||||||
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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 1DW9 | 1.87 | 76.7 | 126659 | 6673 | 95.3 | 0.147 | 0.145 | 0.188 | RANDOM | 10.87 |
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] | |
-0.01 | -0.01 | -0.01 | 0.02 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 35.034 |
r_dihedral_angle_4_deg | 13.112 |
r_dihedral_angle_3_deg | 12.195 |
r_dihedral_angle_1_deg | 6.152 |
r_scangle_it | 3.735 |
r_scbond_it | 2.865 |
r_angle_refined_deg | 1.638 |
r_mcangle_it | 1.38 |
r_mcbond_it | 1.3 |
r_angle_other_deg | 1.159 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 11940 |
Nucleic Acid Atoms | |
Solvent Atoms | 1754 |
Heterogen Atoms | 168 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
DENZO | data reduction |
SCALEPACK | data scaling |
AMoRE | phasing |