4HPP
Crystal structure of novel glutamine synthase homolog
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 7 | 293 | 0.2 M calcium acetate, 0.1 M HEPES, 3-6% w/v polyethylene glycol monomethylether 550, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K |
Crystal Properties | |
---|---|
Matthews coefficient | Solvent content |
2.66 | 53.7 |
Crystal Data
Unit Cell | |
---|---|
Length ( Å ) | Angle ( ˚ ) |
a = 140.01 | α = 90 |
b = 140.01 | β = 90 |
c = 45.03 | 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++ | 2011-12-16 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU MICROMAX-007 | 1.5418 |
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 | 2.5 | 20 | 99.8 | 0.096 | 9.9 | 8.3 | 17750 |
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 | PDB entry 3qaj | 2.5 | 20 | 16568 | 887 | 98.13 | 0.20905 | 0.20463 | 0.2923 | RANDOM | 60.559 |
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] | |
-1.89 | -0.94 | -1.89 | 2.83 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 35.101 |
r_dihedral_angle_4_deg | 20.238 |
r_dihedral_angle_3_deg | 19.514 |
r_dihedral_angle_1_deg | 7.832 |
r_angle_refined_deg | 1.972 |
r_chiral_restr | 0.124 |
r_bond_refined_d | 0.016 |
r_gen_planes_refined | 0.011 |
r_bond_other_d | |
r_angle_other_deg |
Non-Hydrogen Atoms Used in Refinement | |
---|---|
Non-Hydrogen Atoms | Number |
Protein Atoms | 3228 |
Nucleic Acid Atoms | |
Solvent Atoms | 69 |
Heterogen Atoms | 12 |
Software
Software | |
---|---|
Software Name | Purpose |
CrystalClear | data collection |
PHASER | phasing |
REFMAC | refinement |
CrystalClear | data reduction |
CrystalClear | data scaling |