Erratum
1 Department of Biochemistry, Duke University, Durham, NC 27710
2 Agouron Pharmaceuticals, 11205 North Torrey Pines Road, La Jolla, CA 92031
The affiliation of Richard C. Ogden, the fourth author of the Research Article "De novo design, expression, and characterization of Felix: A four-helix bundle protein of native-like sequence" by M. H. Hecht et al. (24 Aug., p. 884) should have read, "Agouron Institute, 505 Coast Boulevard South, La Jolla, CA 92037."