/usr/lib/mime/packages/rasmol is in rasmol 2.7.5.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | chemical/x-pdb; viewer=/usr/bin/rasmol-gtk; test=/usr/bin/test -n "$DISPLAY"; description=Protein DataBank Format; nametemplate=%s.pdb; priority=6
chemical/x-pdb; viewer=/usr/bin/rasmol-classic; test=/usr/bin/test -n "$DISPLAY"; description=Protein DataBank Format; nametemplate=%s.pdb; priority=6
|