9CST
Streptavidin-E101Q-K121A bound to Cu(II)-biotin-ethyl-dipicolylamine cofactor
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 2QCB |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 4 | 293 | ammonium sulfate, sodium acetate |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.33 | 47.22 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 57.82 | α = 90 |
b = 57.82 | β = 90 |
c = 184.139 | γ = 90 |
Symmetry | |
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Space Group | I 41 2 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 | PIXEL | DECTRIS EIGER2 S 16M | 2024-03-19 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL12-2 | 0.8856 | SSRL | BL12-2 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | 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 | 1.13 | 42.09 | 99.7 | 0.764 | 0.08369 | 0.946 | 60.09 | 79.7 | 58555 | 13.62 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||
1 | 1.13 | 1.172 | 99.88 | 3.208 | 3.229 | 0.3621 | 0.784 | 2.15 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | 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 | 1.13 | 42.09 | 1.34 | 58555 | 5620 | 99.69 | 0.1425 | 0.1415 | 0.1604 | 20.09 |
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 | 8.1498 |
f_angle_d | 1.4735 |
f_chiral_restr | 0.1061 |
f_plane_restr | 0.0198 |
f_bond_d | 0.0143 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 924 |
Nucleic Acid Atoms | |
Solvent Atoms | 129 |
Heterogen Atoms | 37 |
Software
Software | |
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Software Name | Purpose |
MOSFLM | data reduction |
Aimless | data scaling |
PHASER | phasing |
PHENIX | refinement |