2QL1
Structural Characterization of a Mutated, ADCC-Enhanced Human Fc Fragment
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 2DTQ |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION | 8 | 298 | 8% PEG 3350, 200 mM Zn Acetate, 5% Glycerol, 0.1 M Imidazole -Malate buffer, pH 8.0, VAPOR DIFFUSION, temperature 298.0K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.68 | 54.14 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 49.869 | α = 90 |
b = 147.492 | β = 90 |
c = 74.315 | 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 | 105 | IMAGE PLATE | RIGAKU RAXIS IV++ | mirrors | 2007-03-01 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU MICROMAX-007 | 1.5418 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (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 | 2.53 | 47.25 | 92.6 | 0.159 | 0.159 | 7.5 | 3.1 | 8675 | 8675 | 36 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
1 | 2.53 | 2.59 | 100 | 0.614 | 0.614 | 1.9 | 3.1 | 924 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (All) | 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 | 2DTQ | 2.534 | 47.25 | 8675 | 8264 | 398 | 91.42 | 0.23506 | 0.23215 | 0.29287 | RANDOM | 36.253 |
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] | |
-2.66 | -2.69 | 5.34 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 34.681 |
r_dihedral_angle_4_deg | 22.242 |
r_dihedral_angle_3_deg | 18.156 |
r_dihedral_angle_1_deg | 7.564 |
r_scangle_it | 3.03 |
r_angle_refined_deg | 1.88 |
r_scbond_it | 1.864 |
r_mcangle_it | 1.136 |
r_mcbond_it | 0.74 |
r_nbtor_refined | 0.322 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1675 |
Nucleic Acid Atoms | |
Solvent Atoms | 24 |
Heterogen Atoms | 114 |
Software
Software | |
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Software Name | Purpose |
CrystalClear | data collection |
MOLREP | phasing |
REFMAC | refinement |
DENZO | data reduction |
SCALEPACK | data scaling |