Dear all,

I want to show my protein in cartoon_tube or cartoon_loop described in pymolwiki (, but when I type the command

show cartoon_tube, all

it returns error information:

Error: unknown representation: 'cartoon_tube'. Choices:
  angles      cgo         ellipsoids  lines       ribbon      surface   
  callback    dashes      everything  mesh        slice       volume    
  cartoon     dihedrals   extent      nb_spheres  spheres   
  cell        dots        labels      nonbonded   sticks  

So how should I show pymol_tube and pymol_loop? Thanks.

Yeping Sun

Institute of Microbiology, Chinese Academy of Sciences