2QRB
Crystal structure of chloride saturated bovine lactoperoxidase at 2.5 A resolution shows multiple halide binding sites
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 2PT3 |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 6.8 | 298 | Tris-HCl, pH 6.8, VAPOR DIFFUSION, HANGING DROP, temperature 298K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.45 | 49.77 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 54.435 | α = 90 |
b = 80.561 | β = 102.77 |
c = 77.706 | γ = 90 |
Symmetry | |
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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 | 291 | IMAGE PLATE | MAR scanner 345 mm plate | Mirror | 2007-07-15 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU RU300 | 1.54132 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (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 | 91.2 | 20727 | 20638 | 36.3 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||||
1 | 2.5 | 2.59 | 92.5 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 2pt3 | 2.5 | 19.47 | 20737 | 20638 | 999 | 90.7 | 0.2 | 0.189 | 0.189 | 0.219 | RANDOM | 27.7 |
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] | |
1.44 | -1.67 | -9.82 | 8.38 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
c_dihedral_angle_d | 23.9 |
c_scangle_it | 2.89 |
c_mcangle_it | 2.59 |
c_scbond_it | 1.79 |
c_angle_deg | 1.7 |
c_mcbond_it | 1.52 |
c_improper_angle_d | 1.08 |
c_bond_d | 0.007 |
c_bond_d_na | |
c_bond_d_prot |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 4774 |
Nucleic Acid Atoms | |
Solvent Atoms | 254 |
Heterogen Atoms | 192 |
Software
Software | |
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Software Name | Purpose |
CNS | refinement |
MAR345dtb | data collection |
DENZO | data reduction |
SCALEPACK | data scaling |
AMoRE | phasing |