[PyMOL] independent positioning of two proteins, in preparation for RosettaDock?

[Paul S. <psh...@sy...>]

Hi all,

I am brand new to PyMol.  I have a model of a kinase, and another of a  
heptapeptide
containing an experimentally derived phosphosite.

The RosettaDock documentation suggests:

    PyMol can be a useful tool to position proteins relative to each  
other. Use "editing" mode
    from the right panel, and try right-clicking to select a chain and  
"drag" to enable
    translation and rotation of the molecule (typically requiring left- 
shift + middle and
    left buttons). Finally from the main menu, File→Export Molecule  
can be used to write a
    PDB file containing the starting structure with both docking  
partners.

Try as I may, I cannot figure out how to do this.  Whatever rotations  
& translations I apply
to one molecule also affects the other.

I will be grateful for any advice this group can give.

Cheers,

  - Paul