2UWU
X-ray high resolution structure of the photosynthetic reaction center from Rb. sphaeroides at pH 6.5 in the neutral state, 2nd dataset
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1PCR | PDB ENTRY 1PCR |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | 6.5 | pH 6.5 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
4.75 | 73.9 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 139.451 | α = 90 |
b = 139.451 | β = 90 |
c = 184.393 | γ = 120 |
Symmetry | |
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Space Group | P 31 2 1 |
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 | MARRESEARCH | MIRROR | 2002-09-05 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | EMBL/DESY, HAMBURG BEAMLINE X11 | EMBL/DESY, HAMBURG | X11 |
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 | 2.04 | 25 | 98 | 0.06 | 18.36 | 3.9 | 128457 | -3 | 36.3 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | 2.04 | 2.06 | 98.5 | 0.57 | 3.07 |
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 1PCR | 2.04 | 119.52 | 124861 | 2575 | 97.2 | 0.208 | 0.208 | 0.232 | RANDOM | 42.17 |
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] | |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
r_dihedral_angle_1_deg | 5.531 |
r_scangle_it | 3.283 |
r_angle_refined_deg | 2.44 |
r_scbond_it | 2.172 |
r_mcangle_it | 1.414 |
r_mcbond_it | 0.795 |
r_nbd_refined | 0.204 |
r_symmetry_hbond_refined | 0.204 |
r_symmetry_vdw_refined | 0.178 |
r_xyhbond_nbd_refined | 0.145 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 6471 |
Nucleic Acid Atoms | |
Solvent Atoms | 497 |
Heterogen Atoms | 794 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
HKL | data reduction |
SCALEPACK | data scaling |
CNS | phasing |