3BHB
Crystal Structure of KMD Phosphopeptide Bound to Human Class I MHC HLA-A2
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7.5 | 298 | 24% POLYACRYLIC ACID, 0.1M HEPES, 0.09M MgCl2, pH 7.5, VAPOR DIFFUSION, hanging drop, temperature 298K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.64 | 53.45 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 57.1 | α = 90 |
b = 80.2 | β = 115.9 |
c = 57.3 | γ = 90 |
Symmetry | |
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Space Group | P 1 21 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 | CCD | SATURN | 2007-04-04 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU | 1.5417 |
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 | 2.2 | 20 | 95.8 | 0.116 | 16.55 | 10.1 | 22776 | -3 | 22.438 |
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) | |||||||||||
2.2 | 2.3 | 75.6 | 0.333 | 4.8 |
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-Work | R-Free | R-Free Selection Details | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 2.2 | 19.5 | 2 | 22724 | 1105 | 96.1 | 0.226 | 0.256 | random | 15.166 |
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] | |
-1.602 | -0.173 | 2.854 | -1.252 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_scangle_it | 2.97 |
c_scbond_it | 2.015 |
c_mcangle_it | 1.82 |
c_angle_deg | 1.57 |
c_mcbond_it | 1.193 |
c_bond_d | 0.013 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 3143 |
Nucleic Acid Atoms | |
Solvent Atoms | 119 |
Heterogen Atoms | 4 |
Software
Software | |
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Software Name | Purpose |
XSCALE | data processing |
CNS | refinement |
PDB_EXTRACT | data extraction |
XDS | data reduction |
XSCALE | data scaling |
MOLREP | phasing |