ELECTRON CRYSTALLOGRAPHY Experimental Data


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Dialysis with Continuous Flow Dialysis Machine
pH 6
Temperature 298.0
Details Escherichia coli lipids, magnesium chloride, sodium chloride, MES, pH 6.0, Dialysis with continuous flow dialysis machine, temperature 298K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 96 α = 90
b = 96 β = 90
c = 100 γ = 90
Symmetry
Space Group P 4 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 4
Diffraction Detector
Detector Diffraction Type Details Collection Date
CCD GATAN Model 795 MegaScan -- 1996-06-07
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ELECTRON MICROSCOPE JEOL 3000 SFF -- -- --

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
3.8 96 88.0 0.495 -- -- 18.8 85254 85254 0.0 0.0 8.14
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)
3.8 3.9 86.9 0.703 -- -- 13.2 4010

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
-- 3.8 6.0 0.0 1.0 1846 1846 124 50.8 0.406 0.406 0.399 0.417 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)
Electron Crystallography 3.8 3.93 -- -- -- 0.424 0.31 -- 36.3
RMS Deviations
Key Refinement Restraint Deviation
x_bond_d 0.017
x_angle_deg 2.794
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.85
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1661
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 0

Software

Software
Software Name Purpose
LATLINE model building
X-PLOR refinement version: 3.851
CCP4 data scaling version: (TRUNCATE)
LATLINE phasing

EM Sample
Sample Vitrification Details --
Sample Aggregation State 2D ARRAY
Sample Reconstruction Method CRYSTALLOGRAPHY
Name of Sample aquaporin
EM Data Acquisition
Date of Experiment --
Temperature (Kelvin) --
Microscope Model JEOL 3000SFF
Detector Type GENERIC FILM
Minimum Defocus (nm) --
Maximum Defocus (nm) --
Minimum Tilt Angle (degrees) --
Maximum Tilt Angle (degrees) --
Nominal CS --
Imaging Mode DIFFRACTION
Electron Dose (electrons per Å**-2) 20.0
Illumination Mode FLOOD BEAM
Nominal Magnification --
Calibrated Magnification --
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details diffraction patterns and images collected
3D Reconstruction
Software Package(s) --
Reconstruction Method(s) --
EM Image Reconstruction Statistics
Number of Particles --
Other Details --
Effective Resolution 3.8