Sorry for the newbie question, but I'm looking for some pdb's to practice packing methodologies on. This will be packing only to start with, not design, and I'm looking for a locked backbone, ( I've seen a function somewhere in the docs for this), and just perturbing the side chains exactly like in this video http://www.youtube.com/watch?feature=player_detailpage&v=_SDHZ-jxP4o....
Are there suitable (as yet non-optimised) pdbs like this to test in the rosetta tarball? Maybe a non optimised pdb from an old foldit challenge would do the job as well?
Thanks in advance