2WP2
Structure of Brdt bromodomain BD1 bound to a diacetylated histone H4 peptide.
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7 | 15 MG/ML BRDT-BD1 PROTEIN WAS MIXED WITH H4-ACK5/K8 PEPTIDE IN A 1:20 MOLAR RATIO. CRYSTALLIZATION WAS BY THE HANGING DROP VAPOUR DIFFUSION METHOD FROM 2.4 M AMMONIUM SULFATE, 0.1 M HEPES PH 7. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.69 | 54.2 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 49.293 | α = 90 |
b = 61.224 | β = 90 |
c = 97.91 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 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 | CCD | MARRESEARCH | 2007-11-01 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ESRF BEAMLINE ID23-2 | ESRF | ID23-2 |
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 | 2.37 | 44 | 96.7 | 0.14 | 7.1 | 3.3 | 12142 | 26.1 |
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 | 2.37 | 2.4 | 63.3 | 0.41 | 2.3 | 1.6 |
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 | BROMODOMAIN BD2 FROM BRDT | 2.37 | 44 | 12142 | 587 | 96.6 | 0.217 | 0.217 | 0.261 | RANDOM | 27.4 |
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] | |
-0.861 | -0.794 | 1.655 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_dihedral_angle_d | 18.7 |
c_angle_deg | 1.154 |
c_improper_angle_d | 0.84 |
c_bond_d | 0.00624 |
c_bond_d_na | |
c_bond_d_prot | |
c_angle_d | |
c_angle_d_na | |
c_angle_d_prot | |
c_angle_deg_na |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1988 |
Nucleic Acid Atoms | |
Solvent Atoms | 111 |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
CNS | refinement |
XDS | data reduction |
XSCALE | data scaling |
MOLREP | phasing |