2WG1
TERNARY COMPLEX OF THE AGED CONJUGATE OF TORPEDO CALIFORNICA ACEYLCHOLINESTERASE WITH SOMAN AND 2-PAM
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 1EA5 | PDB ENTRY 1EA5 |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | 5.8 | 277 | ACHE WAS CRYSTALLIZED IN 34% PEG200, 150 MM MES, PH 6, 4 DEG. C. THE CRYSTAL WAS SOAKED FOR 2 HOURS IN 1.3 MM SOMAN, AT PH 6, 4 DEG C. THEN FOR 22 HOURS IN 10 MM 2-PAM, AT PH 6, 4 DEG C.. THEN FLASH-COOLED IN LN2. | |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 3.8 | 68 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 111.91 | α = 90 |
| b = 111.91 | β = 90 |
| c = 137.17 | γ = 120 |
| Symmetry | |
|---|---|
| Space Group | P 31 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 | 100 | CCD | ADSC CCD | 2007-04-06 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | ESRF BEAMLINE ID14-2 | ESRF | ID14-2 | |
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 | 2.2 | 45.7 | 99.5 | 0.08 | 16.1 | 5.5 | 50657 | -3 | 34.7 | ||||||||||
| 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 | 2.2 | 2.3 | 99.4 | 0.5 | 3.3 | 5.6 | |||||||||||||
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 | PDB ENTRY 1EA5 | 2.2 | 20 | 48171 | 2486 | 99.64 | 0.168 | 0.16581 | 0.2118 | RANDOM | 31.192 | ||||||
| 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] | |
| 1.98 | 0.99 | 1.98 | -2.97 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 32.753 |
| r_dihedral_angle_4_deg | 18.036 |
| r_dihedral_angle_3_deg | 15.304 |
| r_dihedral_angle_1_deg | 6.201 |
| r_scangle_it | 3.106 |
| r_scbond_it | 1.987 |
| r_angle_refined_deg | 1.39 |
| r_mcangle_it | 1.307 |
| r_mcbond_it | 0.696 |
| r_chiral_restr | 0.093 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 4244 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 555 |
| Heterogen Atoms | 217 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| XDS | data reduction |
| XSCALE | data scaling |
| REFMAC | phasing |
