The ultra high resolution structure of a novel alpha-L-arabinofuranosidase (CtGH43) from Clostridium thermocellum ATCC 27405 with bound trimethyl N-Oxide (TRS)
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 3C7E | PDB ENTRY 3C7E |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | 8.5 | 0.1 M TRIS PH 8.5, 20% PEG 2000 MONOMETHYL ETHER, 0.2 M TRIMETHYL N-OXIDE, WITH PARATONE-N USED AS CRYOPROTECTANT | ||
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2 | 39 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 45.44 | α = 90 |
| b = 67.7 | β = 113.09 |
| c = 51.01 | 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 | 2013-09-29 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | DIAMOND BEAMLINE I04 | Diamond | I04 | |
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 | 0.97 | 67.76 | 71.5 | 0.08 | 16.5 | 7.2 | 119795 | ||||||||||||
| 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 | 0.97 | 1 | 6.7 | 0.52 | 2 | 4.2 | |||||||||||||
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 | PDB ENTRY 3C7E | 0.97 | 39.95 | 113299 | 5972 | 71.32 | 0.10413 | 0.1031 | 0.12 | 0.12384 | 0.14 | RANDOM | 11.11 | ||||
| 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] | |
| -0.3 | -0.16 | -0.27 | 0.52 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 32.645 |
| r_sphericity_free | 21.023 |
| r_dihedral_angle_4_deg | 14.781 |
| r_dihedral_angle_3_deg | 11.095 |
| r_dihedral_angle_1_deg | 6.811 |
| r_sphericity_bonded | 6.373 |
| r_rigid_bond_restr | 3.873 |
| r_angle_refined_deg | 1.799 |
| r_scbond_it | 1.271 |
| r_mcangle_it | 1.257 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 2365 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 564 |
| Heterogen Atoms | 9 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| XDS | data reduction |
| xia2 | data scaling |
| BALBES | phasing |
