The American Peptide Society (APS), a nonprofit scientific and educational organization founded in 1990, provides a forum for advancing and promoting knowledge of the chemistry and biology of peptides. The approximately one thousand members of the Society come from North America and from more than thirty other countries throughout the world. Establishment of the American Peptide Society was a result of the rapid worldwide growth that has occurred in peptide-related research, and of the increasing interaction of peptide scientists with virtually all fields of science. Peptides are chains of amino acid residues with remarkable biological functions, ranging from hormonal regulation to antibiotic activities. Members of the American Peptide Society are involved in research in academia, industry, and government, covering all aspects of peptide chemistry, biology, and pharmaceutical science. Research topics include synthesis of biologically important targets, isolation and characterization of new products, structure-activity relationship studies, molecular diversity, de novo design, drug delivery, and the discovery of new pharmaceutical agents. The American Peptide Society is a Sustaining Associate Member of the Federation of American Societies for Experimental Biology (FASEB). Our affiliation with FASEB increases the visibility of our Society in the biomedical research community and allows our participation in any FASEB public affairs initiatives. We are very proud to sponsor Biopolymers: Peptide Science as the official journal of the American Peptide Society. This premier journal is published for us by our friends at Wiley-Interscience. A full year subscription to this journal is automatically included with membership in the APS.