2R20

Structure of the RNA brominated tridecamer r(GCGUU-5BUGAAACGC) at 1.3 A (Br2)


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP72935 mM MgCl2, 5 mM MnCl2, 100 mM NaCl, 30 % MPD, 50 mM tris, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties
Matthews coefficientSolvent content
2.1342.35

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 25.28α = 98.62
b = 25.8β = 105.58
c = 29.99γ = 100.92
Symmetry
Space GroupP 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray80IMAGE PLATEMAR scanner 345 mm platemirrors2002-05-04MMAD
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONESRF BEAMLINE BM30A0.919487,0.919704,0.88558,0.979776ESRFBM30A

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Sym I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
11.320914.99.11306013060
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
1.31.458.6

Refinement

Statistics
Diffraction IDStructure Solution MethodResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMAD1.32011113060235573.70.1810.195random13.936
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]
-0.443-0.812-1.1080.0060.5140.437
RMS Deviations
KeyRefinement Restraint Deviation
c_mcangle_it1.373
c_mcbond_it1.083
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms
Nucleic Acid Atoms552
Solvent Atoms165
Heterogen Atoms6

Software

Software
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
CNSphasing
CNSrefinement
PDB_EXTRACTdata extraction
MAR345dtbdata collection