X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6.5
Temperature 289.0
Details PEG 6000, sodium cacodylate, magnesium acetate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 289K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 95.68 α = 90
b = 95.68 β = 90
c = 315.68 γ = 120
Symmetry
Space Group H 3 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 -- 2001-10-20
Diffraction Radiation
Monochromator Protocol
Si 111 CHANNEL SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X26C 1.1 NSLS X26C

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
2.2 24.53 81.9 -- 0.067 -- 2.9 24477 23477 0.0 -3.0 13.5
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)
2.2 2.25 36.9 0.179 -- -- -- 689

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
MOLECULAR REPLACEMENT 2.2 24.53 -- 0.0 23477 23477 1134 81.9 -- 0.183 0.183 0.221 random
High Resolution Shell
Refinement method Shell Resolution (High) Shell Resolution (Low) # of Reflections (Observed) # of Reflections (R-Free) # of Reflections (R-Work) R-Factor (R-Work) R-Factor (R-Free) R-Factor (R-Free Error) Percent Reflections (Observed)
X Ray Diffraction 2.2 2.25 -- 22 -- 0.261 0.303 0.065 34.0
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model Anisotropic
Anisotropic B[1][1] 0.74
Anisotropic B[1][2] 1.85
Anisotropic B[1][3] -2.58
Anisotropic B[2][2] 2.3
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 0.0
RMS Deviations
Key Refinement Restraint Deviation
IMPROPER ANGLES 1.6
DIHEDRAL ANGLES 22.4
Bond Angles 1.2
Bond Lengths 0.007
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.24
Luzzati Sigma A (Observed) 0.23
Luzzati Resolution Cutoff (Low) 25.0
Luzzati ESD (R-Free Set) 0.29
Luzzati Sigma A (R-Free Set) 0.26
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2591
Nucleic Acid Atoms 499
Heterogen Atoms 26
Solvent Atoms 257

Software

Computing
Computing Package Purpose
CAD4 Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
GLRF Structure Solution
CNS Structure Refinement
Software
Software Name Purpose
CNS refinement
GLRF model building
SCALEPACK data reduction
CAD4 data collection