The cover shows a stereoview of alpha-conotoxin EI that exhibits a unique receptor binding preference to the alpha1/GAMMA subunit interface of Torpedo nicotinic acetylcholine receptor. The blue ribbon traces the "omega-shaped peptide backbone and shown in yellow are two disulfide bonds. The space-filled region represents a putative hydrophobic (X-Pro-psi) binding surface to the alpha-subunit of nicotinic acetylcholine receptor. For details, see the article by Park et al., pages 49028-49033.49028.