1Department of Protein Sciences, GlaxoSmithKline, Research Triangle Park, NC 27709, USA. [email protected] 2Department of Bioengineering, University of California at San Diego, La Jolla, CA
3Department of Protein Sciences, GlaxoSmithKline, Research Triangle Park, NC
4Department of Biochemistry, Rush Medical College at Rush-Presbyterian-St. Luke's Medical Center, Chicago, IL
5Department of Structural Chemistry, GlaxoSmithKline, Research Triangle Park, NC
6Department of Molecular Pharmacology, GlaxoSmithKline, Research Triangle Park, NC