6KQU
Crystal structure of phospholipase A2
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 5WZM | |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION | 277 | 2.2M Sodium chloride, 0.1M BIS-TRIS propane pH 7.0 | |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 3.45 | 64.38 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 48.839 | α = 90 |
| b = 61.117 | β = 90 |
| c = 63.404 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 21 2 2 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 277 | CCD | OXFORD RUBY CCD | 2015-06-11 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SEALED TUBE | OXFORD DIFFRACTION ENHANCE ULTRA | 1.5418 | ||
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (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 | 2 | 18.8 | 99.9 | 0.143 | 0.149 | 0.043 | 0.995 | 21.1 | 11.1 | 13357 | |||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 2 | 2.05 | 100 | 0.439 | 0.471 | 0.168 | 0.961 | 7.5 | |||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | 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 | MOLECULAR REPLACEMENT | THROUGHOUT | 5WZM | 2 | 18.8 | 12686 | 655 | 99.71 | 0.1991 | 0.1972 | 0.2385 | RANDOM | 17.841 | ||||||
| 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] | |
| -0.1 | -0.28 | 0.38 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 34.324 |
| r_dihedral_angle_4_deg | 14.161 |
| r_dihedral_angle_3_deg | 12.165 |
| r_dihedral_angle_1_deg | 5.287 |
| r_angle_refined_deg | 1.685 |
| r_angle_other_deg | 1.029 |
| r_chiral_restr | 0.098 |
| r_bond_refined_d | 0.013 |
| r_gen_planes_refined | 0.009 |
| r_gen_planes_other | 0.004 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 951 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 150 |
| Heterogen Atoms | 39 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| Aimless | data scaling |
| REFMAC | refinement |
| PDB_EXTRACT | data extraction |
| MOSFLM | data reduction |
| MOLREP | phasing |
