X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 7.5
Details CRYSTALS GREW FROM 4 MICROLITRE HANGING DROPS FORMED BY MIXING 2 MICROLITERS OF PROTEIN AT A CONCENTRATION OF 5MG/ML WITH 2 MICROLITERS OF RESERVOIR SOLUTION CONTAINING 15-20% (W/V) PEG 8000, 0.4 M AMMONIUM SULPHATE AND 0.1M HEPES AT PH 7.5.

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 75.3 α = 90
b = 75.3 β = 90
c = 101.78 γ = 120
Symmetry
Space Group P 32 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD ADSC TOROIDAL 2000-10-15
Diffraction Radiation
Monochromator Protocol
DIAMON 100/GE 220 SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON ESRF BEAMLINE ID14-2 -- ESRF ID14-2

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
1.8 30 94.9 0.051 -- -- 2.3 -- 29910 -- -3.0 --
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)
1.8 1.83 71.5 0.227 -- 1.5 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
MOLECULAR REPLACEMENT 1.8 25.24 -- -- -- 29892 1506 94.95 -- 0.15576 0.15449 0.18015 RANDOM
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 17.342
Anisotropic B[1][1] 0.0
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 0.0
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 0.0
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1850
Nucleic Acid Atoms 0
Heterogen Atoms 55
Solvent Atoms 388

Software

Computing
Computing Package Purpose
DENZO Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
AMORE Structure Solution
REFMAC Structure Refinement
Software
Software Name Purpose
REFMAC refinement
AMORE model building