Structure of PIN-domain protein (VapC4 toxin) from Pyrococcus horikoshii determined at 2.2 A resolution
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 1V96 | |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 8.5 | 295 | 0.2M Sodium acetate trihydrate, 0.1M Tris-HCl, 30%(w/v) PEG 4000 |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 1.77 | 30.58 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 51.97 | α = 90 |
| b = 45.26 | β = 104.75 |
| c = 53.62 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 1 21 1 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 300 | CCD | MARMOSAIC 225 mm CCD | 2011-01-10 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | ROTATING ANODE | RIGAKU ULTRAX 18 | 1.54179 | ||
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (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 | 2.21 | 51.85 | 97.2 | 8.5 | 3.3 | 11886 | |||||||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
| 1 | 2.21 | 2.29 | 71.2 | 0.42 | 0.54 | 2.4 | 3 | ||||||||||||
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 (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | R-Free Selection Details | Mean Isotropic B | ||||
| X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 1V96 | 2.23 | 51.85 | 11212 | 661 | 99.64 | 0.21012 | 0.20707 | 0.21 | 0.25904 | 0.26 | RANDOM | 28.159 | ||||
| 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] | |
| 0.81 | -0.76 | 0.94 | -1.18 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 34.502 |
| r_dihedral_angle_4_deg | 20.927 |
| r_dihedral_angle_3_deg | 14.773 |
| r_dihedral_angle_1_deg | 5.615 |
| r_long_range_B_refined | 3.09 |
| r_long_range_B_other | 3.088 |
| r_scangle_other | 1.942 |
| r_mcangle_it | 1.777 |
| r_mcangle_other | 1.776 |
| r_angle_refined_deg | 1.236 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 2285 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 19 |
| Heterogen Atoms | 2 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| iMOSFLM | data reduction |
| Aimless | data scaling |
| PHASER | phasing |
