X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 7.8
Temperature 277.0
Details (NH4)2SO4, Imidazole-HCl, ATP, L-phenylalanine, MnSO4, pH 7.8, VAPOR DIFFUSION, HANGING DROP at 277K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 173.4 α = 90
b = 173.4 β = 90
c = 138.4 γ = 120
Symmetry
Space Group P 32 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD BRANDEIS -- 2000-02-17
Diffraction Radiation
Monochromator Protocol
-- single wavelength
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON NSLS BEAMLINE X12C 0.9800 NSLS X12C

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
2.6 50 94.7 0.079 -- -- 5.3 -- 75189 2.0 1.0 34.1

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
FOURIER SYNTHESIS 2.6 50.0 1.0 2.0 70750 68983 6846 95.7 0.239 0.207 0.216 0.258 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 2.6 2.76 9894 1065 -- 0.31 0.37 0.003 90.0
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model Isotropic
Mean Isotropic B 45.2
RMS Deviations
Key Refinement Restraint Deviation
c_angle_deg 1.76
c_bond_d 0.011
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.36
Luzzati Sigma A (Observed) 0.39
Luzzati Resolution Cutoff (Low) 5.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 8250
Nucleic Acid Atoms 0
Heterogen Atoms 40
Solvent Atoms 289

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
CNS Structure Solution
CNS 1.0 Structure Refinement
Software
Software Name Purpose
CNS version: 1.0 refinement
CNS model building