8BCT
X-ray crystal structure of a de novo selected helix-loop-helix heterodimer in a syn arrangement, 26alpha/26beta
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 4.6 | 293 | 2.0 M ammonium sulfate, 0.1 M sodium acetate, pH 4.6 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.12 | 60.53 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 86.893 | α = 90 |
b = 78.322 | β = 107.97 |
c = 81.55 | γ = 90 |
Symmetry | |
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Space Group | C 1 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 | PIXEL | DECTRIS EIGER2 XE 16M | 2022-04-05 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | DIAMOND BEAMLINE I04 | 0.9795 | Diamond | I04 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | 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 | 1.7 | 39.16 | 100 | 0.048 | 0.052 | 0.02 | 1 | 15.3 | 6.9 | 72542 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||
1 | 1.7 | 1.73 | 100 | 1.07 | 2.793 | 0.435 | 0.79 | 1.7 | 7 |
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 | CC-HP1.0 | 1.7 | 39.16 | 57178 | 2926 | 99.94 | 0.1937 | 0.1927 | 0.2122 | RANDOM | 33.738 |
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] | |
0.73 | 1.15 | -0.79 | -0.57 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_3_deg | 14.955 |
r_dihedral_angle_1_deg | 4.62 |
r_angle_refined_deg | 1.62 |
r_angle_other_deg | 0.544 |
r_chiral_restr | 0.081 |
r_bond_refined_d | 0.011 |
r_gen_planes_refined | 0.009 |
r_bond_other_d | 0.001 |
r_gen_planes_other | 0.001 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2892 |
Nucleic Acid Atoms | |
Solvent Atoms | 219 |
Heterogen Atoms | 70 |
Software
Software | |
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Software Name | Purpose |
Aimless | data scaling |
PHASER | phasing |
REFMAC | refinement |
PDB_EXTRACT | data extraction |
DIALS | data reduction |