James, CCP4mg will allow you select a set of atoms and draw a surface over them in whatever colour scheme that you choose. The tutorial explaining this is at http://www.ysbl.york.ac.uk/~ccp4mg/ccp4mg_help/tutorial/surfaces.html Cheers Liz James Thompson wrote: > > Dear CCP4'ers, > > Any Windows/Linux/OS X programs have a surface scribing function > similar to that found in GRASP, to quickly draw the border of a > surface selection (or subset) and calculate or display local features > of the molecular surface? I have no access to SGIs now. I have a > memory of similar function elsewhere but am not finding the ability > within GRASP2, DINO, CHIMERA, etc. Perhaps I'm thinking of Setor > which was also IRIX, and perhaps this memory is suspect... Other > selection methods for a molecular surface require more of my time to > define the subset. > > Many thanks, > > Jim > > James R. Thompson > > Assistant Professor of Biophysics > > Mayo Clinic College of Medicine > > Department of Physiology and Biomedical Engineering > > Mayo Proteomics Research Center > > Office 507-538-3891 > > Fax 507-538-3954 > > E-mail [log in to unmask] <mailto:[log in to unmask]> > > >