Hi, I generated a set of coordinates in a single PDB file for a movie (coord flanked by MODEL / ENDMDL tags) I can read it and play it with MD movie menu The PDB File has also BIOMT matrices set for displaying the biological assembly My question is how can I play the movie with multiscale model? How Can use automatically the color zone tool to color various protomer instances for all intermediate conformations? (The only way I know for doing that is to generate and select all sym instances but they moved with each of the models!) S Duquerroy -- -------------------------------------------- Duquerroy Stéphane, PhD, Assistant Professor, Univ Paris Saclay Structural Virology Unit, Institut Pasteur 28 rue du Dr Roux, 75015 Paris - France 33 - (0) 140 613 575 --------------------------------------------