1. Endocrine Unit (S.C., A.K.), Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114
2. Center for Systems Biology and Program in Membrane Biology, Nephrology Division (M.J.W., J.-P.V., D.B., D.A.A., H.Y.L., R.B.), Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114
3. Laboratory for GPCR Biology, Department of Pharmacology and Chemical Biology (J.P.V.), University of Pittsburgh, School of Medicine, Pittsburgh, Pennsylvania 15261