This is driving me nuts. I am trying to superimpose two RNA molecules:
PyMOL>load trna10.pdb
....
Executive: object "trna10" created.
PyMOL>load ref4.pdb
....
Executive: object "ref4" created.
PyMOL>color blue
Executive: Colored 2668 atoms.
PyMOL>color yellow, ( trna10 and resid 10:15 and name P )
Executive: Colored 6 atoms.
PyMOL>color red, ( ref4 and resid 10:15 and name P )
Executive: Colored 6 atoms.
All of the above works without incident, so the atom selection syntax
must be ok.
Then I want to fit the two sets of colored phosphorus atoms, selecting
with the same syntax:
PyMOL>fit ( trna10 and resid 10:15 and name P ), ( ref4 and resid
10:15 and name P )
ExecutiveRMS-Error: No atoms selected.
same error if I replace fit with rms
What am I doing wrong?