1GH4
Structure of the triple mutant (K56M, K120M, K121M) of phospholipase A2
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | vapor diffusion method | 7.2 | 293 | Tris Buffer, MPD, 70% MPD reservoir, 17-20Mg/ml protein, 5 mM CaCl2, pH 7.2, vapor diffusion method, temperature 293.0K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.26 | 45.59 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 39.1 | α = 90 |
b = 24.35 | β = 102.15 |
c = 67.11 | γ = 90 |
Symmetry | |
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Space Group | P 1 2 1 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 293 | IMAGE PLATE | MARRESEARCH | 2000-08-20 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE |
Data Collection
Overall | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | 1.9 | 14.2 | 88 | 0.075 | 4.6 | 8880 | 8880 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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) | |||||||||||
1.9 | 1.97 | 72 | 0.293 | 910 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Work | R-Free | Mean Isotropic B | |||||||||
X-RAY DIFFRACTION | 1.9 | 14.2 | 40817 | 8880 | 743 | 88 | 0.196 | 0.259 |
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] | |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
protein_rep.param | 0.011 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 954 |
Nucleic Acid Atoms | |
Solvent Atoms | 133 |
Heterogen Atoms | 2 |
Software
Software | |
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Software Name | Purpose |
DENZO | data reduction |
AMoRE | phasing |
CNS | refinement |
SCALEPACK | data scaling |