Designed ankyrin repeat protein (DARPin) Binders to AcrB: Plasticity of the Interface
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 2J8S | PDB ENTRY 2J8S |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, SITTING DROP | 6.5 | 293 | PEG4000, (NH4)2SO4, ADA, pH 6.5, vapor diffusion, sitting drop, temperature 293K |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 3.93 | 68.74 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 145.4 | α = 90 |
| b = 158 | β = 90 |
| c = 258.6 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 21 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 | 90 | PIXEL | PSI PILATUS 6M | 2007-06-25 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | SLS BEAMLINE X06SA | 1.0 | SLS | X06SA |
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (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 | 3.34 | 50 | 99.8 | 0.143 | 0.143 | 14.98 | 6.63 | 87029 | 86836 | 1 | -3 | 70.68 | |||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Rrim I (All) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||
| 1 | 3.34 | 3.6 | 99.7 | 0.556 | 0.604 | 0.604 | 3.9 | 6.5 | 17266 | ||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (I) | Cut-off Sigma (F) | 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 | MOLECULAR REPLACEMENT | PDB ENTRY 2J8S | 3.34 | 48.776 | -3 | 1.99 | 87029 | 86818 | 1043 | 99.8 | 0.2576 | 0.257 | 0.25 | 0.3075 | 0.31 | RANDOM | 80.1192 | ||
| 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] | |
| -0.0467 | -1.925 | 1.9717 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| f_dihedral_angle_d | 15.781 |
| f_angle_d | 1.645 |
| f_chiral_restr | 0.101 |
| f_bond_d | 0.018 |
| f_plane_restr | 0.011 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 24874 |
| Nucleic Acid Atoms | |
| Solvent Atoms | |
| Heterogen Atoms | |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| XSCALE | data scaling |
| PHASER | phasing |
| PHENIX | refinement |
| PDB_EXTRACT | data extraction |
| XDS | data scaling |
| XDS | data reduction |














