X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6
Details 0.1M KH2 PO4 PH 6.0, 60% SATURATED AMMONIUM SULPHATE

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 52.65 α = 90
b = 52.65 β = 90
c = 100.63 γ = 90
Symmetry
Space Group P 41 2 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 286
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE FUJI FILM MIRRORS 1995-03-15
Diffraction Radiation
Monochromator Protocol
SI(111) SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON PHOTON FACTORY BEAMLINE BL-6A -- Photon Factory BL-6A

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
1.75 52.7 80.3 0.056 -- -- 3.2 -- 11776 -- -- 14.9
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)
1.75 1.8 50.7 0.182 -- 3.8 1.7 --

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
MOLECULAR REPLACEMENT 1.75 8.5 -- 2.0 -- 10118 1024 80.3 -- 0.192 0.192 0.214 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 20.3
RMS Deviations
Key Refinement Restraint Deviation
x_dihedral_angle_d 26.0
x_angle_deg 1.5
x_bond_d 0.008
x_improper_angle_d 1.1
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 957
Nucleic Acid Atoms 0
Heterogen Atoms 1
Solvent Atoms 66

Software

Software
Software Name Purpose
X-PLOR refinement version: 3.1
WEIS data reduction
CCP4 data scaling
X-PLOR phasing version: 3.1