X-ray Experimental Help

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 167 α = 90
b = 167 β = 90
c = 250 γ = 120
Space Group P 3 2 1


Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline


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
-- 8.0 -- -- -- -- -- -- -- -- -- -- -- --
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 14082
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 0

Virus Particulars
Virus Host Category Virus Host Species Virus Host Growth Cell Virus Type Virus Isolate ICTVDB ID
-- -- -- -- -- --
EM Sample
Sample Concentration (mg/ml) 1.0
Sample pH 6.8
Sample Support Details hydrophobic carbon support film on 400 mesh gold-plated Cu EM grid
Sample Vitrification Details 2D crystals were vitrified by immersion in liquid nitrogen
Sample Aggregation State 2D CRYSTAL
Name of Sample Neurospora ATPase hexamer crystal
Sample Details 2D crystals were grown as described in Auer et al, J. Mol. Biol. 287, 961-968 (1999)
EM Data Acquisition
Date of Experiment --
Num of Micrographs-Images Used 60
Temperature (Kelvin) 4.0
Microscope Model JEOL FRANKFURT-3000SFF
Detector Type KODAK SO163 FILM
Minimum Defocus (nm) 600.0
Maximum Defocus (nm) 1200.0
Minimum Tilt Angle (degrees) 0.0
Maximum Tilt Angle (degrees) 60.0
Nominal CS 1.6
Electron Dose (electrons nm**-2) 2500.0
Illumination Mode FLOOD BEAM
Nominal Magnification 50000
Calibrated Magnification 50000
Acceleration Voltage (kV) 300
Imaging Details Images were also recorded on JEOL 2000 EX and Philips CM200 FEG electron microscopes at 80 K at a dose of 1000 e/nm**2
3D Reconstruction
Software Package(s)
Reconstruction Method
EM Image Reconstruction Statistics
Nominal Pixel Size 1.4
Actual Pixel Size 1.4
Effective Resolution 8.0
CTF Correction Method crystallographic
EM Reconstruction Magnification Callibration electron diffraction of standard specimen
EM Map-Model Fitting and Refinement
Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Fitting Software
REAL manual fit best visual fit using the program o -- manual --