X-RAY DIFFRACTION

Crystallization Details
Method pH Temprature Details
X-RAY DIFFRACTION 6.5 293.15 5 mg/mL RNA was resuspended in 2.5 mM magnesium chloride and 10 mM HEPES KOH pH 7.4 and DPEC treated water. The RNA was heated at 65 degrees Celsius and slow cooled to room temperature followed by the addition of spermidine (0.5 mM final). Crystals were grown in 50 mM cacodylate, 2.5 M ammonium sulfate, 20 mM magnesium chloride, 1.0 mM spermine, and 2 mM hexamine cobalt chloride
Unit Cell:
a: 103.032 Å b: 129.126 Å c: 172.005 Å α: 90.00° β: 90.00° γ: 90.00°
Symmetry:
Space Group: I 2 2 2
Crystal Properties:
Matthew's Coefficient: 4.29 Solvent Content: 71.34
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 FREE R-VALUE 3.100 35.790 18974 1629 89.49 0.2303 0.2662 ?
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
3.1 35.79 89.41 .088 ? 16.69 7.1 ? 21141 ? ? ?
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 3.1 3.2 64.37 ? ? 1.37 6.9 ?
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 ALS BEAMLINE 4.2.2 1.072 ALS 4.2.2
Software
Software Name Purpose Version
PHENIX refinement (1.12_2829)
XDS data reduction .
XSCALE data scaling .
PHENIX phasing .
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