5LJF
Crystal structure of the endo-1,4-glucanase RBcel1 E135A with cellotriose
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 4EE9 | 4EE9 polyalanine |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7.4 | 292 | Crystals were grown at 19 C using the hanging drop method by mixing 2 uL of protein solution (385 uM of protein in 20 mM NaPi pH 6.5 and cellotriose 5 mM) , with 2 uL of resevoir buffer (100 mM Tris HCl pH 7.4 with 17.5 pc w/v polyethylene glycol 600) containing seeds. Crystals were cryoprotected by equilibrating 2 hours the drop against 500 uL reservoir containing 0.1M Tris PEG 600 30pc pH 7.4. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.32 | 46.98 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 45.69 | α = 90 |
b = 99.31 | β = 90 |
c = 148.58 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 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 | ADSC QUANTUM 315r | 2015-06-11 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SOLEIL BEAMLINE PROXIMA 2 | 0.9801 | SOLEIL | PROXIMA 2 |
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 | 1.73 | 47.09 | 99 | 0.093 | 15.81 | 8.6 | 70572 | 20.2870816768 |
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 | 1.73 | 1.8 | 94 | 0.86 | 2.54 | 8 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation 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 | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | FREE R-VALUE | 4EE9 polyalanine | 1.73439601224 | 38.918562621 | 1.35787498699 | 70563 | 3529 | 99.3397342043 | 0.177417744335 | 0.175578724123 | 0.212305648019 | 24.3568679699 |
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] | |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 10.7941097506 |
f_angle_d | 0.920329285218 |
f_chiral_restr | 0.0564654844079 |
f_plane_restr | 0.00658217571003 |
f_bond_d | 0.00643096369537 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 5065 |
Nucleic Acid Atoms | |
Solvent Atoms | 821 |
Heterogen Atoms | 68 |
Software
Software | |
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Software Name | Purpose |
XDS | data reduction |
XSCALE | data scaling |
PHASER | phasing |
PHENIX | model building |
Coot | model building |
PHENIX | refinement |