4AOP
SULFITE REDUCTASE HEMOPROTEIN PARTIALLY PHOTOREDUCED WITH PROFLAVINE EDTA, PHOSPHATE PARTIALLY BOUND
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | 7.7 | OXIDIZED SIRHP CRYSTALS WERE PHOTOREDUCED WITH 0.75 MM PROFLAVINE, 10 MM EDTA IN THE PRESENCE OF PHOSPHATE, FOR 20 MIN. ENZYME IS IN A MIXTURE OF THREE OXIDATION STATES. PHOSPHATE (RESIDUE 585) AND WATER 384 COORDINATE THE SIROHEME IRON, EACH IN PARTIAL OCCUPANCY., pH 7.7 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.13 | 40 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 69.8 | α = 90 |
b = 77.4 | β = 90 |
c = 87.8 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 21 |
Diffraction
Diffraction Experiment | ||||||||||||||
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ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 277 | IMAGE PLATE | MARRESEARCH | 1995-03-02 | M |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL7-1 | SSRL | BL7-1 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (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 | 1.8 | 10 | 96.4 | 0.07 | 19 | 2.8 | 41756 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
1 | 1.8 | 1.86 | 99.9 | 0.289 | 4.9 |
Refinement
Statistics | |||||||||||||||||||
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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-Factor (Observed) | R-Work | R-Free | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | PDB ENTRY 1AOP | 1.8 | 10 | 2 | 41041 | 92.3 | 0.175 | 0.175 | 28.6 |
Temperature Factor Modeling | ||||||
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Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
-4.45 | 5.01 | -0.56 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
x_angle_deg | 1.6 |
x_bond_d | 0.01 |
x_bond_d_na | |
x_bond_d_prot | |
x_angle_d | |
x_angle_d_na | |
x_angle_d_prot | |
x_angle_deg_na | |
x_angle_deg_prot | |
x_dihedral_angle_d |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 3563 |
Nucleic Acid Atoms | |
Solvent Atoms | 384 |
Heterogen Atoms | 77 |
Software
Software | |
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Software Name | Purpose |
X-PLOR | refinement |
DENZO | data reduction |
SCALEPACK | data scaling |