3B32
Crystal Structure of Calcium-Saturated Calmodulin N-Terminal Domain Fragment, Residues 1-75
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 3CLN | PDB ENTRY 3CLN |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 5.5 | 277.15 | 100 mM Na acetate, 0.01% Na azide, 21.25% PEG 8000, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 277.15K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
1.97 | 37.62 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 34.352 | α = 90 |
b = 66.096 | β = 90 |
c = 57.823 | γ = 90 |
Symmetry | |
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Space Group | C 2 2 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 | IMAGE PLATE | RIGAKU RAXIS IV++ | Osmic Blue Mirrors | 2004-10-06 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU | 1.5418 |
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 | 1.45 | 15.24 | 97.8 | 0.049 | 19.4 | 3.7 | 11740 | 11740 |
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 | 1.45 | 1.53 | 94.2 | 0.248 | 3.3 | 3.5 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (All) | 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 3CLN | 1.6 | 15.24 | 8458 | 8458 | 418 | 98.56 | 0.20069 | 0.19749 | 0.26916 | RANDOM | 13.911 |
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] | |
0.66 | 0.32 | -0.98 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 29.387 |
r_dihedral_angle_4_deg | 18.216 |
r_dihedral_angle_3_deg | 13.072 |
r_dihedral_angle_1_deg | 4.592 |
r_scangle_it | 3.962 |
r_scbond_it | 2.379 |
r_mcangle_it | 1.279 |
r_angle_refined_deg | 1.226 |
r_mcbond_it | 0.861 |
r_symmetry_hbond_refined | 0.346 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 575 |
Nucleic Acid Atoms | |
Solvent Atoms | 106 |
Heterogen Atoms | 2 |
Software
Software | |
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Software Name | Purpose |
CrystalClear | data collection |
PHASER | phasing |
REFMAC | refinement |
MOSFLM | data reduction |
SCALA | data scaling |