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Sequential oligopeptides. Conformational studies of the oligopeptides and a polypeptide with the repeating sequence L-norvalyl-glycyl-L-proline

✍ Scribed by Gian Maria Bonora; Claudio Toniolo

Publisher
Wiley (John Wiley & Sons)
Year
1974
Tongue
English
Weight
527 KB
Volume
13
Category
Article
ISSN
0006-3525

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✦ Synopsis

Abstract

Conformational studies of a series of oligopeptides (from the tripeptide to the octadecapeptide) with the repeating sequence L‐norvalyl‐glycyl‐L‐proline and a polytripeptide with this sequence are reported. By means of chiroptical techniques, unordered conformations are found for all oligopeptides in water, trifluoroethanol, and ethylene glycol and for the water‐insoluble polymer in trifluoroethanol. In ethylene glycol the polymer assumes a collagen‐like structure. Infrared studies indicate that all the oligomers, in contrast to the polymer, are unordered in the solid state.

📜 SIMILAR VOLUMES

Sequential oligopeptides. Synthesis and
Sequential oligopeptides. Synthesis and characterization of the oligopeptides and a polypeptide with the repeating sequence L-norvalyl-glycyl-L-proline
✍ Gian Maria Bonora; Claudio Toniolo 📂 Article 📅 1974 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 624 KB

## Abstract The synthesis and characterization of a series of oligopeptides (from the tripeptide to the octadecapeptide) with the repeating sequence L‐norvalyl‐glycyl‐L‐proline and a polytripeptide with this sequence are reported. The oligomers were synthesized step by step using the mixed anhydrid

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## Abstract A series of sequential oligopeptides having simple nonpolar side chains, Nps‐(L‐Ala‐L‐Leu‐Gly)~__n__~‐ OEt has been prepared by a stepwise fragment‐condensation method using Nps‐L‐alanyl‐L‐leucylglycine __N__‐hydroxysuccinimide ester, which was prepared by the Nps‐__N__‐carboxy α‐amino‐

Co-oligopeptides of aromatic amino acids
Co-oligopeptides of aromatic amino acids and glycine with a variable distance between the aromatic residues. VI. Circular dichroism studies of co-oligopeptides of L-phenylalanine, L-tryptophan, and glycine
✍ Vincenzo Rizzo; Pier Luigi Luisi; Barbara Straub; Rocco Guarnaccia 📂 Article 📅 1977 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 694 KB

## Abstract The circular dichroic properties of H‐Gly‐Phe‐(Gly)~__n__~‐Trp‐Gly‐OH (II, __n__ = 0,1,2) and of related simpler peptides, such as H‐Phe‐Gly‐OH, H‐Gly‐Phe‐OH, H‐Gly‐Phe‐Gly‐OH, H‐Phe‐Trp‐OH, H‐Phe‐Trp‐Gly‐OH, and H‐Gly‐Phe‐Trp‐OH in water and trifluoroethanol solutions are investigated.