X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 5.75
Temperature 295.0
Details pH 5.75, VAPOR DIFFUSION, HANGING DROP, temperature 295.00K TWO ADENINES, B22 AND B23, WHICH ARE NEAR THE 5-PRIME END OF DNA CHAIN B ARE LOOPED OUT OF THE DNA HELIX. THIS CONFORMATION IS PRESENT IN CRYSTALS THAT WERE SOAKED IN 35% (VOL/VOL) POLYETHYLENE GLYCOL MW 400, FOLLOWED BY RAPID FREEZING AND X-RAY DATA COLLECTION AT -155 DEG. CENTIGRADE.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 49.13 α = 90
b = 88.54 β = 90
c = 59.24 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 118
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR SIEMENS-NICOLET -- --
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE ELLIOTT GX-13 -- -- --

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
2.9 8 96.0 0.099 -- -- -- -- 5289 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
-- 2.9 8.0 -- 1.5 -- 5289 -- -- -- 0.23 -- -- --
RMS Deviations
Key Refinement Restraint Deviation
t_angle_deg 3.3
t_bond_d 0.023
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 941
Nucleic Acid Atoms 814
Heterogen Atoms 0
Solvent Atoms 17

Software

Computing
Computing Package Purpose
TNT Structure Refinement
Software
Software Name Purpose
TNT refinement