Richard Strelitz wrote: > > Before I embark upon building my own version, > does any have (or know of) a vtk based molecule > viewer, especially for proteins and genetic > sequences? It's not vtk-based, but it appears to do what you want, has source available, and is written in C++: http://www.ks.uiuc.edu/Research/vmd/allversions/what_is_vmd.html -Jeremy