title: Biologically active conformations of thymopentin. Studies with conformationally restricted analogs.
abstract: Four cyclic analogs of thymopentin were synthesized and evaluated for biological activity on the human T cell line CEM. Three of these conformationally restricted analogs were biologically active. The one analog which most closely mimicked the conformation predicted from NMR and theoretical energy minimization calculations proved to be inactive. These studies establish that the biologically active conformations of thymopentin differ from the most probable conformation predicted from solution NMR and theoretical energy minimization studies.
authors.affiliation: Immunobiology Research Institute, Annandale, NJ.
authors.forename: G A
authors.initials: GA
authors.lastname: Heavner
authors.forename: T
authors.initials: T
authors.lastname: Audhya
authors.forename: D
authors.initials: D
authors.lastname: Doyle
authors.forename: F S
authors.initials: FS
authors.lastname: Tjoeng
authors.forename: G
authors.initials: G
authors.lastname: Goldstein
mesh_terms: D000595:Amino Acid Sequence; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D010456:Peptides, Cyclic / Q000737:chemistry; D011487:Protein Conformation; D013329:Structure-Activity Relationship; D013816:Thermodynamics; D016305:Thymopentin / Q000031:analogs & derivatives / Q000138:chemical synthesis*
chemical_list: D010456:Peptides, Cyclic; D016305:Thymopentin