PDB files
are available for 1-palmitoyl 2-oleoyl phosphatidyl choline
bilayers (200 molecules total), hydrated with about 15 layers of water
on each side, for various configurations. These membrane models do not
contain cholesterol or other components. The molecular dynamics
simulations which produced these models were done at the
Theoretical Biophysics Group of the Beckman Institute at the
University of Illinois, Urbana-Champaign by
Helmut Heller,
Michael Schaefer and
Klaus Schulten.
These data files were contributed by the authors under the
condition that all derivitive works, including images, plainly include
a citation of the original work, H Heller, M Schaefer, & K Schulten,
"Molecular dynamics simulation of a bilayer of 200 lipids in the gel
and in the liquid-crystal phases",
J. Phys. Chem. 97:8343-60, 1993.
Subsets of molecules were extracted from the above full bilayer PDB files
to produce the images on this page. These subsets are documented in
exheller.txt, and the PDB files are available for
DOS (get the self-unzipping exheller.exe file)
or for
unix or MacIntosh (sorry, get all 4 megabytes as PDB files).
Some small DOS utility programs
were made to assist in extracting the above subsets of molecules.
These PDB Tools are available as ready-to-use
DOS programs and as C source code.
This page is maintained by emartz@microbio.umass.edu
RasMol Images of Lipid Bilayers
There is also a movie script of lipid bilayers.
PDB Files for Lipid Bilayers
The Heller/Schaefer/Schulten lipid bilayer PDB files are available from
the Institute for Medical Optics, Ludwig Maximilians University, Munich,
Germany or from the same site by ftp.
They are also available from our Massachusetts USA ftp site for
DOS (get the self-unzipping bilayers.exe file)
or for
unix (get the compressed Z files)
or for
MacIntosh (sorry, get all 5+ megabytes as PDB files).
PDBTools
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