Beta-helical scaffolds from alternating D,L peptides: New variations on old structures

ORGN 911

Thomas D. Clark, thomas.clark@nrl.navy.mil, Valerie Rodriguez-Garcia, valerie.rodriguez-garcia@nrl.navy.mil, and John L. Kulp III, john.kulp@nrl.navy.mil. Division of Chemistry, Naval Research Laboratory, 4555 Overlook Ave., SW, Washington, DC 20375-5342
This talk will describe new beta-helical scaffolds derived from peptides composed of alternating D- and L-amino acids. Although beta helices have been known for decades—a prominent example is the transmembrane-pore-forming antibiotic gramicidin A—many opportunities remain for exploiting these structures in bioorganic chemistry. A number of designed beta-helical peptides will be presented, and results from CD, IR, NMR, and computer modeling will be discussed.