2Y6P
Evidence for a Two-Metal-Ion-Mechanism in the Kdo- Cytidylyltransferase KdsB
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | 7.5 | THE DROPS CONTAINED EQUAL AMOUNTS OF KDSB (10 MG/ML IN 20 MM TRIS-HCL, PH 7.5, 100 MM NACL, 5 MM MGCL2, 2 MM 2-MERCAPTOETHANOL, SUPPLEMENTED WITH 1 MM CTP) AND RESERVOIR SOLUTION (0.1 M HEPES PH 7.5, 18.8% ISOPROPANOL, 18.7% PEG 4000). |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.57 | 46.9 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 156.175 | α = 90 |
b = 51.175 | β = 102.68 |
c = 107.514 | γ = 90 |
Symmetry | |
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Space Group | C 1 2 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 | MARRESEARCH SX-165 | MIRRORS | 2003-09-14 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | EMBL/DESY, HAMBURG BEAMLINE X13 | EMBL/DESY, HAMBURG | X13 |
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 | 2.1 | 29.36 | 94.8 | 0.04 | 16.74 | 3.75 | 46213 | 31.9 |
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 | 2.1 | 2.18 | 88.5 | 0.12 | 6.12 |
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 | MIRAS | THROUGHOUT | NONE | 2.1 | 29.35 | 42413 | 2263 | 91.48 | 0.21369 | 0.21129 | 0.25792 | RANDOM | 40.206 |
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] | |
0.3 | 1.8 | 0.78 | -0.29 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 34.024 |
r_dihedral_angle_4_deg | 18.491 |
r_dihedral_angle_3_deg | 17.106 |
r_dihedral_angle_1_deg | 5.931 |
r_scangle_it | 3.1 |
r_scbond_it | 1.816 |
r_angle_refined_deg | 1.375 |
r_mcangle_it | 1.039 |
r_mcbond_it | 0.543 |
r_chiral_restr | 0.091 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 5673 |
Nucleic Acid Atoms | |
Solvent Atoms | 192 |
Heterogen Atoms | 105 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
DENZO | data reduction |
SCALEPACK | data scaling |
autoSHARP | phasing |