6JK5
Ca2+-dependent type II antifreeze protein (Ca2+-free form)
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 2ZIB |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 4 | 293 | 0.1M sodium acetate, 0.25M ammonium sulfate, 8% PEG 3350 The crystal was soaked in crystallizaion solution pH adjusted to 3.0 before data collection. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.26 | 39.72 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 66.029 | α = 90 |
b = 66.029 | β = 90 |
c = 50.295 | 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 | ADSC QUANTUM 210 | 2005-05-29 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | PHOTON FACTORY BEAMLINE AR-NW12A | 1.0 | Photon Factory | AR-NW12A |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | R Sym I (Observed) | Rrim I (All) | 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 | 1.25 | 16.4 | 98.3 | 0.052 | 0.052 | 0.055 | 8.5 | 10.1 | 34554 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Rrim I (All) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||
1 | 1.25 | 1.32 | 98.3 | 0.234 | 0.234 | 0.246 | 3.2 | 10.4 |
Refinement
Statistics | |||||||||||||||||||
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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 | 2ZIB | 1.25 | 16.39 | 32988 | 1733 | 98.12 | 0.18127 | 0.17965 | 0.21181 | RANDOM | 15.779 |
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 | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 30.499 |
r_dihedral_angle_4_deg | 14.456 |
r_dihedral_angle_3_deg | 11.563 |
r_dihedral_angle_1_deg | 7.542 |
r_long_range_B_refined | 4.773 |
r_long_range_B_other | 4.322 |
r_scangle_other | 2.944 |
r_scbond_it | 1.982 |
r_scbond_other | 1.97 |
r_mcangle_it | 1.965 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 974 |
Nucleic Acid Atoms | |
Solvent Atoms | 237 |
Heterogen Atoms | 5 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
HKL-2000 | data reduction |
HKL-2000 | data scaling |
MOLREP | phasing |