165D

THE STRUCTURE OF A MISPAIRED RNA DOUBLE HELIX AT 1.6 ANGSTROMS RESOLUTION AND IMPLICATIONS FOR THE PREDICTION OF RNA SECONDARY STRUCTURE


X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Sitting Drop
pH 6.3
Temperature 277.0
Details pH 6.30, VAPOR DIFFUSION, SITTING DROP, temperature 277.00K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 53.8 α = 90
b = 19.4 β = 109.9
c = 50.14 γ = 90
Symmetry
Space Group C 1 2 1

Diffraction

Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR ENRAF-NONIUS FAST -- --
IMAGE PLATE MARRESEARCH -- --
Diffraction Radiation
Monochromator Protocol
-- --
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
-- -- -- -- --
SYNCHROTRON LURE -- LURE --

Data Collection

Overall
Resolution (High) Resolution (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
1.6 -- -- -- -- -- -- -- 6093 2.0 -- --

Refinement

Statistics
Structure Solution Method Refinement High Resolution Refinement Low Resolution Cut-off Sigma (I) Cut-off Sigma (F) Number of Reflections (All) Number of Reflections (Observed) Number of Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work R-Free R-Free Selection Details
-- 1.55 10.0 -- 2.0 -- 6098 -- -- -- 0.18 0.18 -- --
RMS Deviations
Key Refinement Restraint Deviation
x_bond_d 0.017
x_angle_d 0.03
x_angle_deg 2.1
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 0
Nucleic Acid Atoms 372
Heterogen Atoms 28
Solvent Atoms 54

Software

Computing
Computing Package Purpose
X-PLOR Structure Refinement
Software
Software Name Purpose
X-PLOR refinement