At 1/13/11, Rolf Huehne wrote:
>But apparently taking only CA atoms is sometimes not sufficient for Eric
>and his approach of using only some of the CA atoms currently does not
>seem to be possible with the FILTER option.

Dear Rolf,

You are correct. I expect that for the largest biomolecules, in order 
to fit an alpha carbon filtered model into the default java memory, I 
shall need to remove some alpha carbons using the Jmol application 
(with e.g. 512 megs of memory), reconnect over the larger 
inter-atomic distances, then save the reduced-size file, then use it 
for display in e.g. Proteopedia. I have not tried it yet.

You may find it useful to look at some examples of filtering large PDB files:
http://www.proteopedia.org/wiki/index.php/Jmol/Visualizing_large_molecules

I did succeed at connecting non-bonded atoms over arbitrary distances:
http://www.proteopedia.org/wiki/index.php/SV40_Capsid_Simplified
(see "See Also" for the connect command employed)

-Eric


/* - - - - - - - - - - - - - - - - - - - - - - - - - - -
Eric Martz, Professor Emeritus, Dept Microbiology
U Mass, Amherst -- http://Martz.MolviZ.Org

Top Five 3D MolVis Technologies http://Top5.MolviZ.Org
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3D Wiki with Scene-Authoring Tools http://Proteopedia.Org
Biochem 3D Education Resources http://MolviZ.org
ConSurf - Find Conserved Patches in Proteins: http://consurf.tau.ac.il
Atlas of Macromolecules: http://atlas.molviz.org
Workshops: http://workshops.molviz.org
World Index of Molecular Visualization Resources: http://molvisindex.org
PDB Lite Macromolecule Finder: http://pdblite.org
Molecular Visualization EMail List (molvis-list): http://list.molviz.org
Protein Explorer - 3D Visualization: http://proteinexplorer.org
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