X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.5
Details 30% PEG 8K, 0.2 M LITHIUM SULPHATE 0.1 M TRIS, 10 MG/ML PROTEIN, pH 7.50

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 149.52 α = 90
b = 149.52 β = 90
c = 39.06 γ = 90
Symmetry
Space Group P 41 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC CCD -- 2001-09-15
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ESRF BEAMLINE ID14-4 -- ESRF ID14-4

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 35 99.7 0.057 -- -- 5.8 -- 16090 -- 0.0 50.8
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)
2.5 2.6 99.3 0.255 -- -- -- --

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 2.5 34.62 -- 0.0 -- 15915 1598 99.8 -- 0.268 0.268 0.319 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 2.5 2.66 -- 242 2337 0.389 0.473 0.03 99.5
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINE
Mean Isotropic B 61.5
Anisotropic B[1][1] 7.46
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 7.46
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -14.92
RMS Deviations
Key Refinement Restraint Deviation
c_improper_angle_d 0.9
c_mcbond_it 1.6
c_mcangle_it 2.72
c_bond_d 0.01
c_dihedral_angle_d 23.9
c_scbond_it 1.97
c_angle_deg 1.5
c_scangle_it 3.14
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.44
Luzzati Sigma A (Observed) 0.52
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.57
Luzzati Sigma A (R-Free Set) 0.68
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2198
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 247

Software

Software
Software Name Purpose
CNS refinement version: 1.1
DENZO data reduction
SCALEPACK data scaling
CNS phasing