Crystal structure of a ChpT protein (CC_3470) from Caulobacter crescentus CB15 at 2.30 A resolution
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 6.2 | 295.5 | 20% (w/v) PEG-8000, 0.1M MES pH 6.0, 0.2M Calcium acetate, final pH 6.2, VAPOR DIFFUSION,HANGING DROP, temperature 295.5K |
| 2 | VAPOR DIFFUSION, HANGING DROP | 6.2 | 295.5 | 20% (w/v) PEG-8000, 0.1M MES pH 6.0, 0.2M Calcium acetate, final pH 6.2, VAPOR DIFFUSION,HANGING DROP, temperature 295.5K |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 65.19 | α = 90 |
| b = 94.32 | β = 92.26 |
| c = 100.61 | 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 | 100 | PIXEL | DECTRIS PILATUS 6M | Rhodium-coated vertical and horizontal focusing mirrors; liquid-nitrogen cooled double crystal Si(111) monochromator | 2011-07-15 | M | SINGLE WAVELENGTH | |||||
| 2 | 2 | x-ray | 100 | PIXEL | DECTRIS PILATUS 6M | Rhodium-coated vertical and horizontal focusing mirrors; liquid-nitrogen cooled double crystal Si(111) monochromator | 2011-07-25 | M | MAD | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | SSRL BEAMLINE BL12-2 | 0.9795 | SSRL | BL12-2 |
| 2 | SYNCHROTRON | SSRL BEAMLINE BL12-2 | 0.8731,1.0395 | SSRL | BL12-2 |
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 | 2.3 | 65.094 | 97.2 | 0.087 | 10.67 | 3.45 | 52631 | -3 | 51.445 | ||||||||||
| 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 | 2.3 | 2.36 | 97.6 | 0.912 | 1.64 | 3.43 | |||||||||||||
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 | 2.3 | 65.094 | 52619 | 2682 | 97.16 | 0.1853 | 0.1838 | 0.19 | 0.2143 | 0.22 | RANDOM | 54.2108 | |||||
| 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] | |
| -8.3126 | 5.188 | -0.1905 | 8.5031 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| t_omega_torsion | 2.93 |
| t_other_torsion | 2.57 |
| t_angle_deg | 1.02 |
| t_bond_d | 0.01 |
| t_dihedral_angle_d | |
| t_trig_c_planes | |
| t_gen_planes | |
| t_it | |
| t_nbd | |
| t_improper_torsion | |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 6052 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 311 |
| Heterogen Atoms | 28 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| MolProbity | model building |
| PDB_EXTRACT | data extraction |
| SHELX | phasing |
| SHARP | phasing |
| XSCALE | data scaling |
| BUSTER-TNT | refinement |
| XDS | data reduction |
| SHELXD | phasing |
| BUSTER | refinement |














