X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Sitting Drop
pH 7
Temperature 277.0
Details 2.3MM DUPLEX DNA, 120 MM CALCIUM ACETATE, 4.8 MM SPERMINE, 60 MM SODIUM CACODYLATE BUFFER, PH 7.0, 9.5% MPD IN DROP, 25% MPD IN RESERVOIR, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 40.2 α = 90
b = 40.2 β = 90
c = 77.34 γ = 90
Symmetry
Space Group P 41 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 110
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR -- -- --
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS -- NSLS --

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
1.3 25 99.1 0.089 -- -- 13.0 16190 16190 0.0 0.0 --
High Resolution Shell
Resolution (High) Resolution (Low) Percent Possible (All) R Merge I (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All)
1.3 1.35 91.2 0.179 -- -- -- --

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
SIRAS BASED ON THE IODINATED SEQUENCE D(CAT(IODO-G)GGCCCATG) 1.3 20.0 0.0 0.0 16111 16111 800 99.5 0.172 0.172 0.168 0.19 RANDOM
RMS Deviations
Key Refinement Restraint Deviation
s_angle_d 0.016
s_bond_d 0.007
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 0
Nucleic Acid Atoms 486
Heterogen Atoms 0
Solvent Atoms 93

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
DM Structure Solution
SHELXL-97 Structure Refinement
Software
Software Name Purpose
SHELXL-97 refinement
DM model building