Sankarapandi, S. ; Sukumar, M. ; Balaram, P. ; Manoharan, P. T. (1995) Biradicals as ESR probes of conformations in model β-turn peptides Biochemical and Biophysical Research Communications, 213 (2). pp. 439-446. ISSN 0006-291X
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00062...
Related URL: http://dx.doi.org/10.1006/bbrc.1995.2151
Abstract
Electron spin-spin exchange interaction in biradicals has been examined for its potential usefulness in the conformational analysis of peptides in solution. Three peptides with high propensity to adopt β -turn conformations in solution, Boc-Cys-Pro-Xxx-Cys-NHMe (Xxx = Leu, 1; Xxx = Aib, 2; Xxx = Tyr, 3), have been modified into biradicals by spin labeling the thiols groups. Analysis of electron spin resonance spectra of these peptides in it variety of solvents and at different temperatures suggests that the population of folded conformations follows the order 2 > 1 > 3.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 19866 |
| Deposited On: | 22 Nov 2010 11:46 |
| Last Modified: | 13 Jul 2012 11:19 |
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