title: Chemical synthesis of a hexadecapeptide segment of ubiquitin that activates adenylate cyclase and induces lymphocytes to differentiate.
abstract: A hexadecapeptide corresponding to positions 59--74 of ubiquitin was synthesized and purified. The peptide was characterized by its mobility in TLC and electrophoresis, amino acid sequence and composition, and molar rotation. The peptide possessed approximately 40% activity compared with native ubiquitin in each of 3 biological assays in vitro: a) thymocyte induction, b) B cell induction and c) elevation of intracellular cyclic AMP levels in sarcoma 180 cells.
mesh_terms: D000262:Adenylyl Cyclases / Q000378:metabolism*; D000595:Amino Acid Sequence; D000818:Animals; D001402:B-Lymphocytes / Q000187:drug effects*; D002454:Cell Differentiation / Q000187:drug effects; D000242:Cyclic AMP / Q000378:metabolism; D004789:Enzyme Activation; D051379:Mice; D009698:Nucleoproteins; D010455:Peptides / Q000138:chemical synthesis* / Q000494:pharmacology; D012510:Sarcoma 180 / Q000378:metabolism
chemical_list: D009698:Nucleoproteins; D010455:Peptides; D000242:Cyclic AMP; D000262:Adenylyl Cyclases