𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Der Einfluss von D-Aminosäureresten auf das konformative Verhalten von Kollagenmodellpeptiden

✍ Scribed by Peter Frey; Hans Nitschmann


Publisher
John Wiley and Sons
Year
1976
Tongue
German
Weight
526 KB
Volume
59
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

✦ Synopsis


The influence of D‐amino acid residues upon the conformative behaviour of collagen model peptides.

(L‐Pro‐L‐Pro‐Gly)~10~ and (L‐Pro‐D(L)‐Pro‐Gly)~10~ with 10 percent D‐Prolin residues have been synthesized by the Merrifield technique. Further Poly‐(Gly‐Pro‐Pro) and Poly‐(Ala‐Gly‐Pro) with various amounts of D‐amino acid residues have been synthesized by polycondensation of the proper tripeptides. The conformational behaviour of all these polypeptides has been studied by measurements at varying temperatures of optical rotation, circular dichroism and molecular weight. The results show that limited amounts of D‐amino acid residues do not impedecollagen‐like triple helical conformations. The denaturation temperatures, however, are considerably lowered by D‐amino acid residues. The implications of these findings for the understanding of the properties of partially racemized degraded gelatins with relatively low gel melting points are discussed.


📜 SIMILAR VOLUMES


Der einfluß von D-alanin auf das konform
✍ Roth, Werner ;Heidemann, Eckhart 📂 Article 📅 1981 🏛 Wiley (John Wiley & Sons) ⚖ 196 KB

## Abstract With the help of equilibrium measurements on covalently bridged collagen model peptides of the sequence D,L‐Ala‐Gly‐L‐Pro it was shown that the thermostability of the tertiary structure of these peptides is strongly influenced by the D‐Ala contents. The conformational behaviour of the p

Einfluss der Temperatur auf das tribolog
✍ D. Klaffke; M. Hartelt; J. Brand; C. Brand; R. Wittorf 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 394 KB

## Abstract Diamantähnliche Kohlenstoffschichten (DLC) zeichnen sich durch ein sehr günstiges Reibungs‐ und Verschleißverhalten aus. Auf vielen Werkzeugen und hochbelasteten Bauteilen ist DLC daher bereits erfolgreich im Einsatz. In naher Zukunft wird die Bedeutung dieser Schichten als Oberflächens

Der Einfluss der O-Acetylierung auf das
✍ Rolf W. Weber; Hans Nitschmann 📂 Article 📅 1978 🏛 John Wiley and Sons 🌐 German ⚖ 542 KB

**The Influence of __O__‐Acetylation upon the Conformational Behaviour of the Collagen Model Peptide (L‐pro‐L‐Hyp‐Gly)~10~ and of Gelatin** (L‐Pro‐L‐Hyp‐Gly)~10~ which can be considered as a model peptide for collagen structure studies has been synthesized by the Merrifield technique. Subsequently,