X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.1
Details PROTEIN CRYSTALLIZED FROM AMMONIUM SULFATE, 20MM CACL2, 50MM HEPES, PH 8.2; SOAKED IN 20% PEG, 20MM CACL2, 50MM GPE, PH 7.1

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 157.47 α = 90
b = 157.47 β = 90
c = 37.44 γ = 120
Symmetry
Space Group H 3

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 293
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU RAXIS -- 1994-07
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RUH3R -- -- --

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
1.9 44.7 67.4 0.125 0.045 -- 2.1 -- 18875 -- 2.0 --

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
DIFFERENCE FOURIER 1.9 10.0 -- 2.0 -- 18688 -- 67.4 -- 0.2 0.2 -- --
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 27.7
RMS Deviations
Key Refinement Restraint Deviation
x_improper_angle_d 1.6
x_bond_d 0.018
x_angle_deg 3.2
x_dihedral_angle_d 21.3
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2503
Nucleic Acid Atoms 0
Heterogen Atoms 23
Solvent Atoms 155

Software

Computing
Computing Package Purpose
SCALEPACK Data Reduction (data scaling)
X-PLOR Structure Refinement
Software
Software Name Purpose
X-PLOR refinement