3I31
Hera helicase RNA binding domain is an RRM fold
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 6.5 | 298 | 0.1M NaCac pH 6.5, 16-18% P8000, 0.3-0.4M Zn(OAc)2, VAPOR DIFFUSION, SITTING DROP, temperature 298K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.5 | 50.72 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 37.516 | α = 90 |
b = 37.516 | β = 90 |
c = 136.89 | γ = 90 |
Symmetry | |
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Space Group | P 41 21 2 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | PIXEL | PSI PILATUS 6M | 2009-06-05 | M | SINGLE WAVELENGTH | ||||||
2 | 1 | x-ray | 100 | CCD | MARMOSAIC 225 mm CCD | 2009-06-05 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SLS BEAMLINE X06SA | 1.0 | SLS | X06SA |
2 | SYNCHROTRON | SLS BEAMLINE X06DA | 1.8 | SLS | X06DA |
Data Collection
Overall | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Sym 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 | 1.8 | 36.18 | 99.8 | 0.122 | 7.5 | 5.4 | 9812 | 28 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
1,2 | 1.8 | 1.84 | 100 | 0.706 | 1.6 | 5.5 | 457 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | 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 | SIRAS | FREE R-VALUE | 1.8 | 34.222 | 0.06 | 8882 | 427 | 90.92 | 0.2015 | 0.2003 | 0.2235 | random | 42.653 |
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] | |
6.423 | 6.423 | -12.846 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 17.462 |
f_angle_d | 1.202 |
f_chiral_restr | 0.068 |
f_bond_d | 0.008 |
f_plane_restr | 0.007 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 581 |
Nucleic Acid Atoms | |
Solvent Atoms | 39 |
Heterogen Atoms | 12 |
Software
Software | |
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Software Name | Purpose |
SHELXDE | phasing |
PHENIX | refinement |
XDS | data reduction |
SADABS | data scaling |