The structure of a putative RNA methyltransferase of the TrmH family from Porphyromonas gingivalis.
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, SITTING DROP | 4.5 | 291 | 0.8M NaH2PO4, 1.2M K2HPO4, 0.1M Acetate pH 4.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.38 | 48.28 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 41.921 | α = 90 |
| b = 107.119 | β = 90 |
| c = 120.352 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | C 2 2 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 | ADSC QUANTUM 315 | 2005-07-24 | M | MAD | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | APS BEAMLINE 19-ID | 0.97951, 0.97962 | APS | 19-ID |
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 | 1.85 | 37.1 | 98.3 | 11.4 | 3 | 23206 | 23206 | -3 | -3 | ||||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||||
| 1 | 1.85 | 1.92 | 89.2 | 2.35 | 4.3 | ||||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Number Reflections (All) | 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 | 1.85 | 37.1 | 23206 | 22012 | 1193 | 98.33 | 0.19126 | 0.18892 | 0.1873 | 0.2347 | 0.2316 | RANDOM | 34.802 | ||||
| Temperature Factor Modeling | ||||||
|---|---|---|---|---|---|---|
| Anisotropic B[1][1] | Anisotropic B[2][2] | Anisotropic B[3][3] | ||||
| 0.9 | -0.04 | -0.86 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 37.463 |
| r_dihedral_angle_3_deg | 15.601 |
| r_dihedral_angle_4_deg | 12.033 |
| r_dihedral_angle_1_deg | 5.269 |
| r_scangle_it | 3.317 |
| r_scbond_it | 2.294 |
| r_angle_refined_deg | 1.415 |
| r_mcangle_it | 1.366 |
| r_mcbond_it | 0.996 |
| r_nbtor_refined | 0.311 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 1933 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 315 |
| Heterogen Atoms | 4 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| SBC-Collect | data collection |
| HKL-2000 | data reduction |
| HKL-2000 | data scaling |
| HKL-3000 | phasing |
| SHELXD | phasing |
| SHELXE | model building |
| MLPHARE | phasing |
| DM | phasing |
| SOLVE | phasing |
| RESOLVE | phasing |
| ARP/wARP | model building |
| CCP4 | phasing |
| O | model building |
| Coot | model building |
