3K4Z
Crystal Structure of the Cellulosomal CBM4 from Clostridium thermocellum Cellulase CbhA
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 8.5 | 298 | 30% PEG 4000, 0.2 M magnesium chloride hexahydrate, Tris hydrochloride, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.45 | 49.78 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 60.578 | α = 90 |
b = 94.315 | β = 90 |
c = 113.487 | γ = 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 Platinum 135 | 2009-05-18 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | BRUKER AXS MICROSTAR | 1.5418 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Sym 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 | 2.11 | 50 | 99.7 | 0.0991 | 10.83 | 4.1 | 19168 | 19105 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
2.11 | 2.21 | 99.1 | 0.4193 | 2.51 | 2.84 | 2461 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (I) | 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 entries 1RQ5 and 1GU3 | 2.11 | 25.04 | 2.33 | 18089 | 18089 | 978 | 99.6 | 0.16391 | 0.16391 | 0.16075 | 0.22447 | RANDOM | 11.203 |
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] | |
0.24 | -0.23 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 37.787 |
r_dihedral_angle_4_deg | 19.35 |
r_dihedral_angle_3_deg | 14.526 |
r_dihedral_angle_1_deg | 7.218 |
r_scangle_it | 3.913 |
r_scbond_it | 2.699 |
r_angle_refined_deg | 1.79 |
r_mcangle_it | 1.564 |
r_mcbond_it | 0.949 |
r_angle_other_deg | 0.927 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2210 |
Nucleic Acid Atoms | |
Solvent Atoms | 271 |
Heterogen Atoms | 48 |
Software
Software | |
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Software Name | Purpose |
MrBUMP | phasing |
REFMAC | refinement |