X-RAY DIFFRACTION Experimental Data & Validation

X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 8.5
Details 16-18% (W/V) PEG 8000, 250 MM LITHIUM SULPHATE, 100 MM MES/TRIS PH 8.5

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 111.5 α = 90
b = 74.3 β = 106.57
c = 146.9 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 283
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR SIEMENS -- 1996-03-20
Diffraction Radiation
Monochromator Protocol
GRAPHITE CRYSTAL SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU -- -- --

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 20 86.6 0.091 -- -- 2.0 -- 61763 -- -- --
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)
2.6 2.74 41.2 0.148 -- 2.5 1.3 --

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 2.6 30.0 -- 0.0 -- 61515 3106 86.3 -- 0.224 0.224 0.244 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 2.69 -- 94 1823 0.334 0.333 0.034 27.1
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 23.6
Anisotropic B[1][1] 11.032
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] -0.884
Anisotropic B[2][2] -12.42
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 1.388
RMS Deviations
Key Refinement Restraint Deviation
c_dihedral_angle_d 24.8
c_improper_angle_d 1.1
c_bond_d 0.009
c_angle_deg 1.66
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.36
Luzzati Sigma A (Observed) 0.5
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.4
Luzzati Sigma A (R-Free Set) 0.53
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 13680
Nucleic Acid Atoms 0
Heterogen Atoms 8
Solvent Atoms 508

Software

Software
Software Name Purpose
CNS refinement version: 1.0
XENGEN data reduction
CNS phasing