X-RAY DIFFRACTION

Crystallization Details
Method pH Temprature Details
X-RAY DIFFRACTION 7.0 293 Directly after size exclusion chromatography chMDA5 deltaCARD-Q was mixed with 10 bp dsRNA in a 1:1 molar ratio and incubated for 30 minutes on ice. The complex was concentrated to around 10 mg/ml and 2 mM AMPPNP was added. Sample and reservoir buffer (0.025 M Bis-Tris pH 6.5, 0.075 M succinic acid pH 7.0, 12-14% PEG 3350, 2% sucrose) were mixed in a 2:1 ratio. Three hours after setup, cover glasses with drops were transferred from a reservoir containing 12-14% PEG 3350 to one containing 8% PEG 3350. Crystals grew in one week at 20 C and were harvested in cryo-protectant solution (0.025 M Bis-Tris pH 6.5, 0.075 M succinic acid pH 7.0, 25% 3350, 10% ethylene glycol) before flash freezing with liquid nitrogen.
Unit Cell:
a: 72.080 Å b: 139.730 Å c: 103.190 Å α: 90.00° β: 110.14° γ: 90.00°
Symmetry:
Space Group: P 1 21 1
Crystal Properties:
Matthew's Coefficient: 2.77 Solvent Content: 55.62
Refinement Statistics
Diffraction ID Structure Solution Method Cross Validation Method Resolution Limit (High) Resolution Limit (Low) Number of Reflections (Observed) Number of Reflections (R-free) Percent Reflections (Observed) R-Work R-Free Mean Isotropic
X-RAY DIFFRACTION MOLECULAR REPLACEMENT THROUGHOUT 2.95 50 36153 1907 94.16 0.25657 0.27046 81.287
Data Collection
Overall
Resolution Limit (High) Resolution Limit (Low) Percent Possible (Observed) R Merge I (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
2.95 50.0 94.0 0.094 ? 9.94 5.20 ? 38060 ? ? ?
Highest Resolution Shell
# Resolution Limits (Low) Resolution Limits (High) Percent Possible (All) Percent Possible (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All)
1 2.95 3.06 96.6 ? ? 1.78 5.05 ?
Diffraction
Diffraction experiment
Crystal ID Scattering Type Data Collection Temprature Detector Detector Type Details Collection Date Monochromator Protocol
1 100 K ?
Radiation Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ESRF BEAMLINE ID29 0.9763 ESRF ID29
Software
Software Name Purpose Version
REFMAC refinement 5.8.0131
XDS data reduction .
XSCALE data scaling .
PHASER phasing .
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