2I32
Structure of a human ASF1a-HIRA complex and insights into specificity of histone chaperone complex assembly
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1ROC | PDB ENTRY 1ROC |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 5.6 | 298 | CRYSTALS OF THE HUMAN ASF1AN-HIRA(425-472) COMPLEX WERE GROWN BY HANGING DROP VAPOR DIFFUSION AT ROOM TEMPERATURE AND WERE OBTAINED BY MIXING 2 UL OF A 0.5 MM PROTEIN COMPLEX SOLUTION (IN 20 MM HEPES PH 7.0, 150 MM NACL AND 5 MM BETA-ME) WITH 2 UL OF RESERVOIR SOLUTION CONTAINING 1.44 M NAH2PO4 AND 0.16 M K2HPO4 AT PH 5.6, AND EQUILIBRATING OVER 1.0 ML OF RESERVOIR SOLUTION. CRYSTALS WERE FULLY GROWN WITHIN TWO WEEKS TO A TYPICAL SIZE OF 0.3MMX0.3MMX0.2MM, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298.0K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.02 | 59.25 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 116.226 | α = 90 |
b = 116.226 | β = 90 |
c = 167.599 | γ = 120 |
Symmetry | |
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Space Group | P 65 2 2 |
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 | 77 | CCD | ADSC QUANTUM 4 | mirrors | 2005-04-01 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | NSLS BEAMLINE X6A | 0.980 | NSLS | X6A |
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 | 2.5 | 50 | 99.9 | 0.058 | 12.8 | 43841 | -3.5 |
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) | |||||||||||
2.5 | 2.59 | 99.6 | 0.641 | 2322 |
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-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | PDB ENTRY 1ROC | 2.7 | 25 | 19106 | 43841 | 1813 | 95.7 | 0.229 | 0.269 | RANDOM | 52.923 |
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] | |
-8.451 | -8.556 | -8.451 | 16.901 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_scangle_it | 3.275 |
c_mcangle_it | 2.561 |
c_scbond_it | 2.133 |
c_mcbond_it | 1.464 |
c_angle_deg | 1.421 |
c_bond_d | 0.007 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2780 |
Nucleic Acid Atoms | |
Solvent Atoms | 130 |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
DENZO | data reduction |
SCALEPACK | data scaling |
PHASER | phasing |
CNS | refinement |
PDB_EXTRACT | data extraction |
HKL-2000 | data collection |
HKL-2000 | data reduction |
HKL-2000 | data scaling |