Conformational studies on synthetic repetitive sequences and analogues of elastin are described. C D and nmr measurements gave evidence of flexible ,&turns as the dominant structural feature whose stability was found t o decrease by increasing the number of repetitivc units. The sequences comprised
Synthetic fragments and analogues of elastin. I. The synthesis
✍ Scribed by V. Guantieri; S. Grando; L. Pandolfo; A. M. Tamburro
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1990
- Tongue
- English
- Weight
- 635 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0006-3525
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✦ Synopsis
Abstract
The synthesis of some repetitive sequences of elastin and their simplified analogues, all comprising the structural unit Gly‐X‐Gly (X = Val, Leu, Ala), is described. In particular, the following peptides and polypeptides were synthesized and characterized: Boc‐Gly‐Val‐Gly‐Gly‐Leu‐OMe, Boc‐Gly‐Leu‐Gly‐Gly‐Val‐OMe, Boc‐(Gly‐Val‐Gly‐Gly‐Leu)~2~‐OMe, Boc‐(Gly‐Val‐Gly‐Gly‐Leu)~3~‐OMe, Boc‐Gly‐Val‐Gly‐Gly‐OEt, Boc‐Leu‐Gly‐Gly‐Leu‐OMe, Boc‐Val‐Gly‐Gly‐Val‐OMe, poly(Ala‐Gly‐Gly), poly(Val‐Gly‐Gly), and poly (Leu‐Gly‐Gly).
In every case, the synthesis was accomplished by classical procedures in solution, by using the p‐nitrophenyl ester method for the polycondensation step, and the mixed anhydride or the azide methods for the coupling steps.
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