Brahmachari, Samir K. ; Ananthanarayanan, V. S. ; Rapaka, Rao S. ; Bhatnagar, Rajendra S. (1978) Polypeptide models of Collagen. II. Solution properties of (Pro-Gly-Phe)n Biopolymers, 17 (9). pp. 2097-2105. ISSN 0006-3525
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/bip.197...
Related URL: http://dx.doi.org/10.1002/bip.1978.360170905
Abstract
The conformation of (Pro-Gly-Phe)n in trifluoroethanol was investigated using CD, nmr and ir techniques. After making appropriate correction for the contribution of the phenylalanine chromophore to the observed CD spectra of the polytripeptide at several temperatures, it is found that (Pro-Gly-Phe)n can exist in a partially triple-helical conformation in this solvent a t low temperatures. The nmr and ir data support this conclusion. In conjunction with recent theoretical sutdies, our data offer an explanation for the preferential occurrence of the Phe residue in position 2 of the tripeptide sequence Gly-R2-R3, in collagen.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons. |
| ID Code: | 44498 |
| Deposited On: | 22 Jun 2011 08:18 |
| Last Modified: | 22 Jun 2011 08:18 |
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