The Scientist has a really good article this edition on top down proteomics for protein complexes. If you don't get the free magazine delivered to your house, you can read the article here.
Highlights? Overviews of a bunch of different researchers current work...oh...and the suggestion that Northwestern has hacked a QE HF to have extended mass range along the way of the Exactive EMR!?!?! and it has the capability to do pseudo-MS3s!!!!!