✦ LIBER ✦
Localized vibrational modes at a double-helix-single-strand junction
✍ Scribed by B. F. Putnam; E. W. Prohofsky
- Book ID
- 101719634
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1983
- Tongue
- English
- Weight
- 436 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0006-3525
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✦ Synopsis
Synopsis
A vibrational analysis has been performed for a double-helix-single-strand junction. A Green's function technique has been used in treating the junction as a defect on an otherwise perfect system of infinite chain homopolymers. We calculate that the hydrogen-bond stretching a t the junction is amplified by a factor of two relative to the interior of the double helix, B poly(dG)-poly(dC). Breathing modes localized near the junction have also been predicted a t 77 and 94 wave numbers. The calculated results are shown to be consistent with predictions from recent nmr studies.