Nonlinear wave trains in three-strand α-helical protein models

C. B. Tabi, J. C. Mimshe Fewu, H. P. Ekobena Fouda, A. Mohamadou, T. C. Kofané

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Realistic models of α-helix proteins are composed of three covalently-bonded strands, each of which is made of hydrogen-bonded peptide units. The modulational instability analysis of such complex molecular systems is carried out in this work. We show that the exciton-vibron coupling parameter contributes to the explosion and expansion of instability regions. The right choice of the modulational instability parameters leads to the formation of excitonic modulated pulse-like structures. It is argued that covalent bonds are compressed during the process of energy transport, while hydrogen bond oscillations display regular trains of breather-like objects. We also argue that the probable way of energy transport, from modulational instability, is through hydrogen bonds.

Original languageEnglish
Article number374
JournalEuropean Physical Journal B
Volume86
Issue number9
DOIs
Publication statusPublished - Sep 1 2013

Fingerprint

strands
proteins
Proteins
Hydrogen bonds
hydrogen bonds
Covalent bonds
covalent bonds
Excitons
helices
Peptides
Explosions
peptides
explosions
Hydrogen
excitons
oscillations
expansion
energy
hydrogen
pulses

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Tabi, C. B., Mimshe Fewu, J. C., Ekobena Fouda, H. P., Mohamadou, A., & Kofané, T. C. (2013). Nonlinear wave trains in three-strand α-helical protein models. European Physical Journal B, 86(9), [374]. https://doi.org/10.1140/epjb/e2013-40467-6
Tabi, C. B. ; Mimshe Fewu, J. C. ; Ekobena Fouda, H. P. ; Mohamadou, A. ; Kofané, T. C. / Nonlinear wave trains in three-strand α-helical protein models. In: European Physical Journal B. 2013 ; Vol. 86, No. 9.
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Tabi, CB, Mimshe Fewu, JC, Ekobena Fouda, HP, Mohamadou, A & Kofané, TC 2013, 'Nonlinear wave trains in three-strand α-helical protein models', European Physical Journal B, vol. 86, no. 9, 374. https://doi.org/10.1140/epjb/e2013-40467-6

Nonlinear wave trains in three-strand α-helical protein models. / Tabi, C. B.; Mimshe Fewu, J. C.; Ekobena Fouda, H. P.; Mohamadou, A.; Kofané, T. C.

In: European Physical Journal B, Vol. 86, No. 9, 374, 01.09.2013.

Research output: Contribution to journalArticle

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