3B8U
Crystal structure of Escherichia coli alaine racemase mutant E221A
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
---|---|---|---|
Type | Source | Accession Code | Details |
experimental model | PDB | 2RJG | PDB ENTRY 2RJG |
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7 | 277 | 0.1M HEPES, 1.6M ammonium sulfate, pH7.0, VAPOR DIFFUSION, HANGING DROP, temperature 277K |
Crystal Properties | |
---|---|
Matthews coefficient | Solvent content |
3.12 | 60.59 |
Crystal Data
Unit Cell | |
---|---|
Length ( Å ) | Angle ( ˚ ) |
a = 147.952 | α = 90 |
b = 147.952 | β = 90 |
c = 163.438 | γ = 120 |
Symmetry | |
---|---|
Space Group | P 6 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | IMAGE PLATE | RIGAKU RAXIS IV | 2007-09-16 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU | 1.5418 |
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 | 164.399 | 97.5 | 0.164 | 0.164 | 4.4 | 5.2 | 39617 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
1 | 3 | 3.16 | 98.8 | 0.391 | 0.391 | 1.9 | 4.6 | 5853 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Work | R-Free | Mean Isotropic B | ||||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | PDB ENTRY 2RJG | 3 | 15 | 38 | 39281 | 3736 | 97.4 | 0.215 | 0.224 | 20.606 |
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] | |
-1.009 | -5.883 | -1.009 | 2.018 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
c_scangle_it | 2.212 |
c_mcangle_it | 1.628 |
c_scbond_it | 1.402 |
c_mcbond_it | 0.96 |
Non-Hydrogen Atoms Used in Refinement | |
---|---|
Non-Hydrogen Atoms | Number |
Protein Atoms | 10853 |
Nucleic Acid Atoms | |
Solvent Atoms | 354 |
Heterogen Atoms | 120 |
Software
Software | |
---|---|
Software Name | Purpose |
MOSFLM | data reduction |
SCALA | data scaling |
CNS | refinement |
PDB_EXTRACT | data extraction |
CrystalClear | data collection |
CNS | phasing |