Hi Bathsheba, One way to get a hi-resolution molecular surface in .pov format: - Download YASARA View ( http://www.yasara.org ) - Download Michel Sanner's MSMS program from www.scripps.edu/~sanner/python/packager.html and make sure that the MSMS executable can be found in the directory yasara\sms - Run YASARA and load your PDB file - Click on View > Show surface > Parameters, select the highest resolution and toggle 'Analytic surface using MSMS'. - Click View > Show surface > All - Click File > Save as > Ray-traced screenshot > Create PovRay scene description There are many options to color your surface and adjust transparencies of outer and inner surface sides, the vertices can also inherit the color of the closest atom. Good luck, Elmar -- Elmar Krieger, PhD YASARA Biosciences & CMBI Outstation Austria Neue-Welt-Hoehe 13/b A-8042 Graz Austria/Europe Ww c(@@)c ================()==OUu============ =WHAT IF YASARA knows the answer?!= =----- http://www.yasara.org -----= =- http://www.cmbi.ru.nl/whatif -= ============OOo==================== () () _/ /_