Structure of NADH-preferring ketol-acid reductoisomerase from an uncultured archean
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 4KQX | |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, SITTING DROP | 5 | 295 | 0.1 M bis-tris pH 5, 20% w/v polyethylene glycol 1500 |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 3.51 | 64.98 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 49.695 | α = 90 |
| b = 141.748 | β = 90 |
| c = 148.598 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 2 21 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 | PIXEL | DECTRIS PILATUS 6M | 2013-03-30 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | SSRL BEAMLINE BL12-2 | 0.9795 | SSRL | BL12-2 |
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Sym 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 | 1.535 | 102.57 | 99.4 | 0.088 | 7.2 | 4.5 | 157419 | ||||||||||||
| 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 | 1.535 | 1.7 | 99.8 | 0.963 | 1.5 | 4.5 | |||||||||||||
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 | 4KQX | 1.535 | 102.57 | 145320 | 7699 | 97.25 | 0.18022 | 0.17875 | 0.19 | 0.20914 | 0.22 | RANDOM | 25.89 | ||||
| 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] | |
| -1.07 | 0.2 | 0.87 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_long_range_B_refined | 6.041 |
| r_long_range_B_other | 6.041 |
| r_scangle_other | 5.349 |
| r_scbond_it | 3.663 |
| r_scbond_other | 3.663 |
| r_mcangle_other | 2.924 |
| r_mcangle_it | 2.92 |
| r_mcbond_it | 2.246 |
| r_mcbond_other | 2.245 |
| r_angle_refined_deg | 2.038 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 5144 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 359 |
| Heterogen Atoms | 126 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| XDS | data reduction |
| SCALA | data scaling |
| PHASER | phasing |
