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2024-05-16
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Editing revision 3 of Electrostatics calculations with APBS and PyMol
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[[APBS]] is available on all machines *but* PyMol is only available on the newer nodes. You better sit on one of them. ---------- Start with a clean PDB of your structure. PyMol can add missing hydrogens and side chains (?), but you can always use a PDB file prepared by /psfgen/. Then : * pymol mypdb.pdb * Plugin -> APBS tools * Select *APBS Location*. The APBS binary location should already be there (/usr/local/bin/apbs). Add the location of the /psize.py/ file by typping <b>/usr/local/bin/psize.py</b> in the box labeled as such. * Click 'Set grid' at the bottom of the APBS tools window. * The unix shell should inform you of the grid size for the calculation. * Click 'Run APBS' at the bottom of the APBS tools window. * Select *Visualization* and click *Update*. The sub-menus for molecular surface, and the two isosurfaces should appear. * Click *Update* in the 'Molecular Surface' sub-menu. You should see it. * You can also try to plot the isosurfaces (with the 'update' switch in their respective submenus). [[image: Electrostatics with APBS and PyMol (molecular surface)]]
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