## Abstract Using Wilson's GF‐matrix method as modified by Higgs for infinite helical polymers, dispersion curves and the frequency distribution function have been calculated for poly‐L‐proline II chain. Infrared spectrum is obtained and a Urey‐Bradley force field, which provides best fit with the
Vibrational analysis and dispersion curves of poly-L-hydroxyproline chain
✍ Scribed by R. B. Srivastava; V. D. Gupta
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1974
- Tongue
- English
- Weight
- 428 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0006-3525
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✦ Synopsis
Abstract
Dispersion curves and frequency distribution for poly‐L‐hydroxyproline (PLHP) chain were obtained using Wilson's GF matrix method as modified by Higgs. These are compared with those of poly‐L‐proline II and polyglycine II, which also have three‐fold screw symmetry. Ring and skeletal modes characteristic of PLHP are identified and the assignments of observed infrared and Raman frequencies are reported. Urey‐Bradley force constants were evaluated.
📜 SIMILAR VOLUMES
## An analysis of the normal modes of vibration and their dispersion for the poly-L-proline I is carried out using Wilson's Gp matrix method 3s modified by H&s for an infinite helical system. The conformational dependence of various modes nnd the effect of&-trots isomerism is discussed.
## Abstract The normal vibration frequencies of poly(L‐alanine) and poly(L‐alanylglycine) in the antiparallel chain‐pleated sheet structure have been calculated, using the force field for polyglycine I from the previous paper (__Biopolymers__ **15**, 2439–2464) plus additional force constants for t
The Raman and ir spectra of a-helical polybglutarnic acid) have been assigned on the basis of a normal mode calculation for this structure. The force field was based on our previously refined mainchain force constants for a-polyb-alanine) and side-chain force constants for /3calcium-poly(L-glutamate