TY - JOUR
T1 - Nonlinear wave trains in three-strand α-helical protein models
AU - Tabi, C. B.
AU - Mimshe Fewu, J. C.
AU - Ekobena Fouda, H. P.
AU - Mohamadou, A.
AU - Kofané, T. C.
PY - 2013/9/1
Y1 - 2013/9/1
N2 - 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.
AB - 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.
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U2 - 10.1140/epjb/e2013-40467-6
DO - 10.1140/epjb/e2013-40467-6
M3 - Article
AN - SCOPUS:84884510724
VL - 86
JO - European Physical Journal B
JF - European Physical Journal B
SN - 1434-6028
IS - 9
M1 - 374
ER -