I've tried looking for the answer, and maybe I just haven't found the right references, but what is the algorithm that foldIt uses for the backbone wiggling procedure? Is it based on rotamers? Is there a reference I could look up? I just found it pretty neat and I'm wondering how the little perturbations are done. I'm assuming the sidechain wiggling is rotamer based with clash considerations in the picture? Seeing it happen 'live' is neat. Is it Rosetta functions running behind the scenes that handles this, or something else?