1RTX
Crystal Structure of Synechocystis Hemoglobin with a Covalent Heme Linkage
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 6.5 | 277 | 30% PEG MME 5000, 0.2M ammonium sulfate, 0.01 cadmium chloride, 0.1M MES, 0.01M potassium phosphate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.17 | 43.23 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 42.5 | α = 90 |
b = 46 | β = 90 |
c = 61 | 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 | 100 | CCD | ADSC QUANTUM 4 | 1M RH COATED BENT CYLINDRICAL M | 2002-12-03 | M | MAD | |||||
2 | 1 | x-ray | 100 | IMAGE PLATE | RIGAKU RAXIS IV | Osmic confocal | 2002-01-20 | M | SINGLE WAVELENGTH | |||||
1,2 | 1 |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL1-5 | 1.737570, 1.239793, 1.739925 | SSRL | BL1-5 |
2 | ROTATING ANODE | RIGAKU RU200 |
Data Collection
Overall | |||||||||||||||||||
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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 | 1.8 | 36.76 | 97.2 | 0.048 | 10922 | 10617 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
1,2 | 1.8 | 1.85 | 78.8 | 0.211 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | 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 | MAD | THROUGHOUT | 1.8 | 36.76 | 10922 | 10617 | 649 | 97.2 | 0.218 | 0.218 | 0.218 | 0.224 | RANDOM | 33.64 |
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] | |
-0.19 | -1.45 | 1.64 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_1_deg | 5.774 |
r_angle_refined_deg | 3.956 |
r_scangle_it | 3.582 |
r_scbond_it | 2.312 |
r_mcangle_it | 1.469 |
r_mcbond_it | 0.823 |
r_nbd_refined | 0.242 |
r_symmetry_vdw_refined | 0.213 |
r_xyhbond_nbd_refined | 0.182 |
r_symmetry_hbond_refined | 0.142 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 969 |
Nucleic Acid Atoms | |
Solvent Atoms | 79 |
Heterogen Atoms | 51 |
Software
Software | |
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Software Name | Purpose |
d*TREK | data scaling |
d*TREK | data reduction |
REFMAC | refinement |
SOLVE | phasing |
RESOLVE | phasing |