X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion
pH 6
Details pH 6.00, VAPOR DIFFUSION

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 74.8 α = 90
b = 128.7 β = 90
c = 145.9 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 110
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD -- -- 1995-12-30
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON CHESS BEAMLINE A1 -- CHESS A1

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
2.5 18 73.0 -- 0.043 -- 4.0 -- 36401 -- 2.0 --
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)
2.77 2.86 80.2 -- 0.264 4.7 2.7 --

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
MAD-SIR 2.5 8.0 -- 2.0 -- 35100 1788 73.5 -- 0.242 0.242 0.285 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 2.8 2.87 -- 72 1368 0.398 0.51 -- 60.3
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 45.0
RMS Deviations
Key Refinement Restraint Deviation
x_dihedral_angle_d 13.8
x_mcangle_it 5.87
x_scangle_it 4.59
x_angle_deg 1.27
x_improper_angle_d 1.2
x_bond_d 0.01
x_scbond_it 2.98
x_mcbond_it 3.78
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.4
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 0
Nucleic Acid Atoms 6766
Heterogen Atoms 52
Solvent Atoms 6

Software

Software
Software Name Purpose
MAD-SIR model building
X-PLOR refinement version: 3.843
DENZO data reduction
CCP4 data scaling
SCALEPACK data scaling