1. Protein Chemistry and Signal Transduction, Novo Nordisk, DK-2880 Bagsvaerd, Denmark, MedChem Research I and MedChem Research IV, Novo Nordisk, DK-2760 Måløv, Denmark, Chemistry Department, Technical University of Denmark, MEMPHYS, DK-2800 Lyngby, Denmark, and Ontogen Corporation, 2325 Camino Vida Roble, Carlsbad, California 92009