Hi Irene, I'm not sure I understand your question. The "repr" command only changes the style of the residue, regardless of whether the residue is displayed -- it won't display it. To display it, you would use a command like: display :64 Similarly, you could undisplay all atoms/bonds with ~display or undisplay selectively, for example ~display :hem I hope this helps, Elaine ---------- Elaine C. Meng, Ph.D. UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab Department of Pharmaceutical Chemistry University of California, San Francisco On Aug 16, 2010, at 12:25 PM, Irene Newhouse wrote:

When I try repr sphere :64 or repr stick :64 over the default presentation of my protein in ribbons [the heme group is in sticks, as are automatically selected residues in close proximity], as suggested in today's user mail, it doesn't work. It only seems to work if all atoms of the protein are displayed. I can only reset the display mode of the residues Chimera has chosen to show in addition to ribbons using these commands on the default mostly-ribbon display. How do I get the protein mostly in ribbons with a few residues in stick or ball & stick? While I haven't worked through the entire tutorials referenced in today's mail, the examples of repr shown early on do not do this; they start from a display of all the protein's atoms.

Thanks! Irene Newhouse