title: Cystine peptides: the intramolecular antiparallel beta-sheet conformation of a 20-membered cyclic peptide disulfide.
mesh_terms: D003553:Cystine; D004220:Disulfides; D010456:Peptides, Cyclic; D011487:Protein Conformation
chemical_list: D004220:Disulfides; D010456:Peptides, Cyclic; D003553:Cystine