109D

VARIABILITY IN DNA MINOR GROOVE WIDTH RECOGNISED BY LIGAND BINDING: THE CRYSTAL STRUCTURE OF A BIS-BENZIMIDAZOLE COMPOUND BOUND TO THE DNA DUPLEX D(CGCGAATTCGCG)2


X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 24.59 α = 90
b = 40.44 β = 90
c = 65.76 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR XENTRONICS -- --
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE ENRAF-NONIUS -- -- --

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
-- -- 87.0 -- -- -- -- -- n/a -- -- --

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
-- 2.0 8.0 -- 2.0 -- 4016 -- -- -- 0.197 0.197 -- --
RMS Deviations
Key Refinement Restraint Deviation
x_bond_d 0.02
x_angle_deg 4.3
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 0
Nucleic Acid Atoms 486
Heterogen Atoms 31
Solvent Atoms 90

Software

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