Structural basis for the unfolding of anthrax lethal factor by protective antigen oligomers
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 3HVD | PDB entry 3HVD |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 7.2 | 291 | 16% PEG 3000, 0.1M cacodylic acid, 0.2M magnesium chloride, 10 mM Tris-Cl, 75 mM sodium chloride, 10 mM adenosine-5'-triphosphate, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 291K |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 3.11 | 60.5 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 178.381 | α = 90 |
| b = 178.381 | β = 90 |
| c = 240.363 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 4 21 2 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 100 | CCD | ADSC QUANTUM 315r | 2009-02-08 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | ALS BEAMLINE 8.3.1 | 1.11587 | ALS | 8.3.1 |
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 | 3.1 | 49.8 | 99.8 | 0.069 | 11.4 | 7.9 | 70642 | 65167 | 1 | 2 | |||||||||
| 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) | |||||||||||
| 3.1 | 3.19 | 78 | 0.46 | 2.2 | 8 | ||||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | Mean Isotropic B | |||||
| X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | PDB entry 3HVD | 3.101 | 49.835 | 0.14 | 65165 | 1832 | 92.07 | 0.25 | 0.2491 | 0.24 | 0.2811 | 0.28 | ||||||
| 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] | |
| -3.7082 | -3.7082 | 8.3746 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| f_dihedral_angle_d | 11.097 |
| f_angle_d | 0.61 |
| f_chiral_restr | 0.042 |
| f_bond_d | 0.005 |
| f_plane_restr | 0.002 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 20337 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 4 |
| Heterogen Atoms | 8 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| HKL-2000 | data collection |
| PHASER | phasing |
| PHENIX | refinement |
| HKL-2000 | data reduction |
| HKL-2000 | data scaling |














