X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | 8 | 277 | the protein solution in the final superdex-75 buffer (20 mM Tris.HCl, 100 mM NaCl, 0.02% NaN3, pH 8.0) was concentrated to 8 mg/ml. The Se-Met derivative and the 2.19 A crystals were obtained using an optimized initial crystallization condition of 8 ul of protein vs 1 ul of reservoir solution (0.2M (NH4)2SO4, 0.1M Sodium cacodylate tryhydrate pH 6.5, 30% PEG 8000) at 4C by sitting drop vapor diffusion, VAPOR DIFFUSION, SITTING DROP, temperature 277K | |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 3.39 | 59.25 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 42.957 | α = 90 |
| b = 75.874 | β = 90 |
| c = 77.512 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 21 21 21 |
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 | RIGAKU SATURN 944 | MIRRORS | 2006-10-17 | M | SINGLE WAVELENGTH | |||||
| 2 | 1 | x-ray | 100 | CCD | MARMOSAIC 300 mm CCD | ROSENBAUM-ROCK MONOCHROMATOR HIGH-RESOLUTION DOUBLE-CRYSTAL SI(220) SAGITTAL FO CUSING, ROSENBAUM- ROCK VERTICAL FOCUSING MIRROR | 2008-11-18 | M | MAD | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | ROTATING ANODE | RIGAKU FR-E SUPERBRIGHT | |||
| 2 | SYNCHROTRON | APS BEAMLINE 22-ID | 0.9793,0.9795,0.9718 | APS | 22-ID |
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 | 2.19 | 28.78 | 93.4 | 0.033 | 28.1 | 4.18 | 12680 | 3 | |||||||||||
| 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) | |||||||||||
| 2.19 | 2.27 | 62.3 | 0.256 | 3.5 | 2.05 | ||||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | 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) | R-Free Selection Details | Mean Isotropic B | |||||
| X-RAY DIFFRACTION | MAD | THROUGHOUT | 2.19 | 28.78 | 11436 | 1244 | 93.3 | 0.24 | 0.236 | 0.235 | 0.284 | 0.2815 | RANDOM | 48.12 | |||||
| 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] | |
| -1.19 | 0.15 | 1.04 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 43.298 |
| r_dihedral_angle_4_deg | 23.943 |
| r_dihedral_angle_3_deg | 16.213 |
| r_dihedral_angle_1_deg | 5.259 |
| r_scangle_it | 3.663 |
| r_scbond_it | 2.156 |
| r_mcangle_it | 1.324 |
| r_angle_refined_deg | 1.284 |
| r_mcbond_it | 0.682 |
| r_chiral_restr | 0.101 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 1274 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 135 |
| Heterogen Atoms | 1 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| StructureStudio | data collection |
| SnB | phasing |
| PHASER | phasing |
| REFMAC | refinement |
| d*TREK | data reduction |
| d*TREK | data scaling |














