4ZIQ
Crystal structure of trypsin activated alpha-2-macroglobulin from Escherichia coli.
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 8.5 | 293.5 | 12-16% [w/v] PEG8,000 100mM Tris-HCl |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.88 | 57.3 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 274.28 | α = 90 |
b = 95.36 | β = 104.77 |
c = 81.09 | 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 | PIXEL | DECTRIS PILATUS 6M | 2013-02-09 | M | MAD | ||||||
2 | 1 | x-ray | 100 | PIXEL | DECTRIS PILATUS 6M | 2013-11-22 | M | MAD | ||||||
3 | 1 | x-ray | 100 | PIXEL | DECTRIS PILATUS 6M | 2012-11-03 | M | MAD |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ALBA BEAMLINE XALOC | 0.9724, 0.9768, 0.9788, 0.9793, 0.9791 | ALBA | XALOC |
2 | SYNCHROTRON | ESRF BEAMLINE ID23-1 | 0.9724, 0.9768, 0.9788, 0.9793, 0.9791 | ESRF | ID23-1 |
3 | SYNCHROTRON | ESRF BEAMLINE ID29 | 0.9724, 0.9768, 0.9788, 0.9793, 0.9791 | ESRF | ID29 |
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 | 2.55 | 47.7 | 99.4 | 0.1 | 19.3 | 14.9 | 65409 | 65409 | 85.37 |
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 | 2.55 | 2.7 | 98.8 | 1.163 | 2.2 | 9.1 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Cross Validation method | 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 | SIRAS | THROUGHOUT | 2.55 | 47.68 | 65374 | 1083 | 98.97 | 0.1903 | 0.1898 | 0.2213 | RANDOM | 111.06 |
Temperature Factor Modeling | ||||||
---|---|---|---|---|---|---|
Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
2.477 | 10.7971 | -7.0753 | 4.5982 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
t_other_torsion | 3.14 |
t_omega_torsion | 2.72 |
t_angle_deg | 1.05 |
t_bond_d | 0.009 |
t_dihedral_angle_d | |
t_incorr_chiral_ct | |
t_pseud_angle | |
t_trig_c_planes | |
t_gen_planes | |
t_it |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 11224 |
Nucleic Acid Atoms | |
Solvent Atoms | 105 |
Heterogen Atoms | 9 |
Software
Software | |
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Software Name | Purpose |
XDS | data reduction |
XSCALE | data scaling |
SHELXDE | phasing |
Coot | model building |
BUSTER | refinement |