1TF7
Crystal Structure of Circadian Clock Protein KaiC
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | EVAPORATION, RECRYSTALLIZATION | 4 | 291 | sodium formate, glycerol, pH 4, EVAPORATION, RECRYSTALLIZATION, temperature 291K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.56 | 52 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 132.873 | α = 90 |
b = 135.576 | β = 90 |
c = 204.951 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 21 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 108 | CCD | MARRESEARCH | 2002-07-10 | M | SINGLE WAVELENGTH | ||||||
2 | 1 | x-ray | 108 | CCD | MARRESEARCH | 2003-06-01 | M | MAD |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 5ID-B | 1 | APS | 5ID-B |
2 | SYNCHROTRON | APS BEAMLINE 22-ID | 1.25 | APS | 22-ID |
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 | 2.8 | 30 | 99.6 | 0.043 | 20.6 | 9 | 91590 | 87750 |
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) | |||||||||||
2.8 | 2.9 | 99.3 | 0.501 | 2.2 | 8637 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | 2.8 | 30 | 79746 | 79746 | 4041 | 0.24 | 0.24 | 0.24 | 0.28 | random | 55 |
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] | |
-11.827 | -3.378 | 15.204 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
c_angle_d | 1.38429 |
c_bond_d | 0.008723 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 22890 |
Nucleic Acid Atoms | |
Solvent Atoms | 71 |
Heterogen Atoms | 372 |
Software
Software | |
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Software Name | Purpose |
DENZO | data reduction |
SCALEPACK | data scaling |
GLRF | phasing |
CNS | refinement |
MLPHARE | phasing |
RAVE | phasing |