X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 2MS2 | PDB ENTRY 2MS2 |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | 7.4 | 300 | PROTEIN IN 1.25% OR 1.5% PEG 8000, 0.1M NA PHOSPHATE PH 7.4 AND 0.02% NA AZIDE WAS EQUILIBRATED AGAINST 0.35M OR 0.4M NA PHOSPHATE PH 7.4, 0.02% NA AZIDE AT 300 OR 370 C. WASHED CRYSTALS WERE SOAKED IN 2MG/ML RNA. | |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 80 | |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 287.3 | α = 90 |
| b = 287.3 | β = 90 |
| c = 651.6 | γ = 120 |
| Symmetry | |
|---|---|
| Space Group | H 3 2 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 278 | IMAGE PLATE | MARRESEARCH | 1997-09-15 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | ESRF BEAMLINE ID2 | ESRF | ID2 | |
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 | 2.8 | 30 | 69 | 0.185 | 3 | 2 | 172487 | 44.7 | |||||||||||
| 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) | |||||||||||
| 2.8 | 2.95 | 34 | 0.361 | 1.9 | 1.3 | ||||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Work (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | R-Free Selection Details | Mean Isotropic B | ||||
| X-RAY DIFFRACTION | DIFFERENCE FOURIER | THROUGHOUT | PDB ENTRY 2MS2 | 2.8 | 30 | 172479 | 172479 | 6927 | 68.3 | 0.188 | 0.19 | 0.197 | 0.19 | RANDOM | 37.1 | ||||
| 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 | |
|---|---|
| Key | Refinement Restraint Deviation |
| x_scangle_it | 10.69 |
| x_scbond_it | 8.87 |
| x_mcangle_it | 7.69 |
| x_mcbond_it | 5.64 |
| x_angle_deg | 1.38 |
| x_bond_d | 0.006 |
| x_bond_d_na | |
| x_bond_d_prot | |
| x_angle_d | |
| x_angle_d_na | |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 2908 |
| Nucleic Acid Atoms | 729 |
| Solvent Atoms | 101 |
| Heterogen Atoms | |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| CCP4 | model building |
| X-PLOR | refinement |
| MOSFLM | data reduction |
| CCP4 | data scaling |
| CCP4 | phasing |














