Hi, I try to render a protein molecule to a geometry format (from .pdb format to .obj format) by Chimera. I use 'Multiscale models' tool in 'Higher-Order Structure' choice and then make the model by resurfacing at some appropriate resolution. It turns out that the whole protein molecule can be modeled pretty nicely. However, I now have a similar problem; instead of rendering the whole protein molecule, I would like to render the whole structure separately. I want to render the exposed residues (those residues on the surface) and non-exposed/buried residues separately, so I will have two obj files (one for the exposed residues and the others for the non-exposed residues). I haven't been able to figure this problem out yet. Thus, I am wondering could you please give me some direction? Any advice will be greatly appreciated! Thank you, Hsin-Yi (Cindy) Yeh -- Hsin-Yi (Cindy) Yeh PhD Student Parasol Lab, Department of Computer Science and Engineering Texas A&M University Email: hyeh@cse.tamu.edu https://parasol.tamu.edu/people/hyeh/