172D

MULTIPLE BINDING MODES OF ANTICANCER DRUG ACTINOMYCIN D: X-RAY, MOLECULAR MODELING, AND SPECTROSCOPIC STUDIES OF D(GAAGCTTC)2-ACTINOMYCIN D COMPLEXES AND ITS HOST DNA


X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion
pH 7
Temperature 277.0
Details pH 7.00, VAPOR DIFFUSION, temperature 277.00K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 70.54 α = 90
b = 70.54 β = 90
c = 53.3 γ = 120
Symmetry
Space Group H 3

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 123
Diffraction Detector
Detector Diffraction Type Details Collection Date
DIFFRACTOMETER RIGAKU AFC-5R -- --
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
-- -- -- -- --

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
3 10 -- -- -- -- -- 1928 1035 1.5 -- --

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
-- 3.0 10.0 -- 1.5 -- 1035 -- -- -- 0.212 0.212 -- --
RMS Deviations
Key Refinement Restraint Deviation
x_bond_d 0.039
x_angle_deg 6.4
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 0
Nucleic Acid Atoms 644
Heterogen Atoms 0
Solvent Atoms 140

Software

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