Best programs/profs for Chemical Biology?

[jmaj]

Prospective graduate student interested in Chemical Biology - more specifically protein modification, protein probes, and protein therapeutics. But just in general, what schools have the best chemical biology programs / professors? Some schools have entire chemical biology departments but for the ones that don't it is hard to tell which schools have strong programs. There aren't really rankings for this type of thing so it's hard to get an idea of where the good programs are. Thanks!

[Eigen]

Look at top-tier journals in chemical biology. Note faculty doing research that interests you. Apply to those schools. 

Rankings really aren't worth all that much- find someone doing interesting work that consistently publishes and you're likely going to be going into a successful group.