By the way, I am using mac pymol...
I want to manually dock a protein with a piece of DNA. I found in a previous post that it could be done by opening two PDB and shift-middle click-and-drag on the molecule to translate and shift-left-click-and-drag to rotate. I opened both PDBs, and when I pressed shift, and click on the molecule I want to move, and middle click and drag, it didn't translate the molecule, but only draws a box.... I didn't know what I did wrong. Any idea? Thank you so much!