title: Tallysomycin, a new antitumor antibiotic complex related to bleomycin. II. Structure determination of tallysomycins A and B.
abstract: The structures of tallysomycins A and B, two major components of a new antitumor antibiotic complex, have been determined. They are glycopeptide antibiotics structurally related to bleomycin: four amino acid moieties and a disaccharide fragment which are the constituents of bleomycin molecule are also present in the tallysomycins. Tallysomycins A and B contain two new amino acids and a unique amino sugar, 4-amino-4,6-dideoxy-L-talose, which have not been hitherto found in the phleomycin-bleomycin group of antibiotics. In addition tallysomycin A has an additional amino acid, L-beta-lysine, and thus a longer peptide chain than bleomycin or tallysomycin B. Tallysomycins A and B have the same terminal amine moiety, spermidine.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000903:Antibiotics, Antineoplastic; D002241:Carbohydrates / Q000032:analysis; D055598:Chemical Phenomena; D002621:Chemistry; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D010446:Peptide Fragments / Q000032:analysis; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000596:Amino Acids; D000903:Antibiotics, Antineoplastic; D002241:Carbohydrates; D010446:Peptide Fragments