X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Hanging Drop Vapor Diffusion with Micro Seeding
pH 7.5
Temperature 277.0
Details 75mM TRIS-HCl, 75 mM MgCl2, 21-22% PEG4000 , pH 7.5, hanging drop vapor diffusion with micro seeding, temperature 277K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 76.98 α = 90
b = 76.98 β = 90
c = 140.15 γ = 90
Symmetry
Space Group P 43 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC QUANTUM 4 -- 1998-11-01
Diffraction Radiation
Monochromator Protocol
Silicon Crystal SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON CHESS BEAMLINE F1 -- CHESS F1

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
1.4 42.99 77.0 0.051 -- -- 5.4 -- 64370 -- -- 16.1

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 1.4 42.99 -- 2.0 -- 64370 3246 77.0 -- 0.216 0.216 0.24 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 1.4 1.49 -- 418 7859 0.252 0.295 0.014 60.5
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 16.3
Anisotropic B[1][1] 0.06
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 0.06
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -0.13
RMS Deviations
Key Refinement Restraint Deviation
c_scbond_it 2.17
c_dihedral_angle_d 21.1
c_mcbond_it 1.09
c_bond_d 0.005
c_scangle_it 3.18
c_angle_deg 1.1
c_improper_angle_d 0.77
c_mcangle_it 1.68
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.17
Luzzati Sigma A (Observed) 0.05
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.19
Luzzati Sigma A (R-Free Set) 0.08
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3388
Nucleic Acid Atoms 0
Heterogen Atoms 72
Solvent Atoms 263

Software

Software
Software Name Purpose
CNS refinement
MOSFLM data reduction
CCP4 data scaling version: (SCALA)
CNS phasing