7DKP
Crystal structure of E. coli Grx2 in complex with GSH at 1.45 A resolution
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
---|---|---|---|
Type | Source | Accession Code | Details |
experimental model | PDB | 4KX4 |
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 5.6 | 293.15 | Protein solution: 25mg/ml in 25mM Tris pH 8.0, 150 mM NaCl, 20 mM GSH, 10 mM DHA Reservoir condition: 0.2M Ammonium acetate, 0.1M Sodium citrate tribasic dihydrate pH 5.6, 30% w/v Polyethylene glycol 4,000. Protein and reservoir mixed in 1:1, 1:2 and 2:1 ratio, set up using MRC Swissci 3 well plates with drop size of 150 nl. |
Crystal Properties | |
---|---|
Matthews coefficient | Solvent content |
2.14 | 42.6 |
Crystal Data
Unit Cell | |
---|---|
Length ( Å ) | Angle ( ˚ ) |
a = 49.84 | α = 90 |
b = 169.451 | β = 93.51 |
c = 49.842 | 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 EIGER X 4M | 2017-07-16 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ESRF BEAMLINE MASSIF-3 | 0.968 | ESRF | MASSIF-3 |
Data Collection
Overall | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | 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 | 1.449 | 42.94 | 94.7 | 0.099 | 0.113 | 0.055 | 0.997 | 8.7 | 4.2 | 137631 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||
1 | 1.449 | 1.476 | 89.2 | 0.635 | 0.726 | 0.349 | 0.759 | 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 | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 4KX4 | 1.45 | 42.893 | 131485 | 6877 | 95.08 | 0.1394 | 0.1383 | 0.1604 | RANDOM | 11.935 |
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] | |
-0.45 | 0.17 | 0.72 | -0.28 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 33.579 |
r_dihedral_angle_4_deg | 16.072 |
r_dihedral_angle_3_deg | 11.312 |
r_dihedral_angle_1_deg | 6.557 |
r_angle_refined_deg | 1.881 |
r_angle_other_deg | 1.687 |
r_chiral_restr | 0.333 |
r_bond_refined_d | 0.016 |
r_gen_planes_refined | 0.01 |
r_bond_other_d | 0.001 |
Non-Hydrogen Atoms Used in Refinement | |
---|---|
Non-Hydrogen Atoms | Number |
Protein Atoms | 6813 |
Nucleic Acid Atoms | |
Solvent Atoms | 1314 |
Heterogen Atoms | 119 |
Software
Software | |
---|---|
Software Name | Purpose |
REFMAC | refinement |
PDB_EXTRACT | data extraction |
XDS | data reduction |
Aimless | data scaling |
PHASER | phasing |