Hi Claus,

going from the example on the PyMOLWiki, which uses also one structure with 
ligand and one without:

fetch 1akeA 4akeA, async=0
align 1akeA, 4akeA
morph mout, 1akeA, 4akeA
extract ligand, 1akeA and organic
hide everything
show cartoon, mout
show sticks, ligand

The ligand can't be part of the morphed multi-state object (mout), because 
there are no target coordinates for it. But if you just extract it to a 
separate object (with one state), it still can be part of a movie and even move 
around independently. Try this:

mset 1-30
unset movie_auto_store
mview store, 1, object=ligand
translate [10,0,0], object=ligand
mview store, 30, object=ligand

(this might move in a silly direction, but you get the idea...)

Cheers,
  Thomas

On Oct 11, 2013, at 9:59 AM, "Kuhn, Claus-Dieter" <k...@cshl.edu> wrote:
> Hi everyone,
> 
> I am trying to use the new morph command with incentive Pymol 1.6. The 2 
> states I am morphing between show an enzyme, which closes its active site 
> over an incoming small molecule, meaning, the small molecule is only present 
> in the second structure.
> How can I get Pymol to display the small molecule during morphing? 
> I always receive an error message where Pymol tells me that it couldnt 
> recognize the small molecule. Is there a way I can load a library into Pymol 
> as can be easily done in Coot?
> 
> Thanks for any advice,
> 
> Claus
> 
> Cold Spring Harbor Laboratory
> Cold Spring Harbor, NY, USA

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