X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 6.5
Details PROTEIN WAS CRYSTALLIZED FROM 18-22% PEG8K, 300 MM AMMONIUM ACETATE (PH 6.5), 10% GLYCEROL.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 84.8 α = 90
b = 84.8 β = 90
c = 203.7 γ = 120
Symmetry
Space Group H 3

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 111
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD CUSTOM-MADE DUAL SLITS 1996-06
Diffraction Radiation
Monochromator Protocol
SILICON CRYSTAL --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON CHESS BEAMLINE F2 -- CHESS F2

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
3 20 99.1 0.061 0.061 -- 4.5 -- 20328 -- 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)
3.0 3.23 99.7 0.09 0.09 13.5 3.5 --

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 3.0 12.0 -- 2.0 -- 20328 -- -- -- 0.242 0.242 0.309 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 29.97
Anisotropic B[1][1] 1.31
Anisotropic B[1][2] 0.642
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 0.642
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 0.0
RMS Deviations
Key Refinement Restraint Deviation
x_bond_d 0.02
x_angle_deg 2.3
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1715
Nucleic Acid Atoms 1054
Heterogen Atoms 0
Solvent Atoms 10

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
PHASES Structure Solution
X-PLOR 3.8 Structure Refinement
Software
Software Name Purpose
X-PLOR version: 3.8 refinement
PHASES model building