Abstract.
The amide-I \(\alpha\) -helix protein is a long molecular chain made up of regularly spaced peptide groups interacting via C=O bonds. According to the current theory the energy released by hydrolyzed adenosine triphosphate is carried across the protein via vibration modes, caused by C=O bond stretchings which, in the presence of anharmonic molecular vibrations, can promote nonlinear localized excitations called excitons. In this work the effects of long-range interactions between amide-I molecules on the modulational instability of small-amplitude excitons, and on characteristic parameters of soliton wavetrain-type excitons, are investigated with emphasis on long-range interactions saturating at finite intermolecular interaction ranges. It is found that long-range interactions strongly affect the dispersion of vibration modes of the protein chain, causing a narrowing of the modulational-instability regions for small-amplitude excitons. Characteristic parameters of the exciton soliton wavetrain, including its velocity, tail and average width (i.e., the exciton width at half tail), are drastically enhanced with respect to their values when only the short-range interaction is considered. The results suggest a sizable increase of the energy carried by excitons along the protein chain above predictions based on short-range considerations.
Graphical abstract
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
C. Falvo, V. Pouthier, J. Chem. Phys. 123, 184709 (2005)
C. Falvo, V. Pouthier, J. Chem. Phys. 123, 184710 (2005)
A.S. Davydov, N.I. Kislukha, Phys. Status Solidi B 59, 465 (1973)
A.C. Scott, Phys. Rep. 217, 1 (1992)
K.D. Zhu, T. Kobayashi, Phys. Lett. A 196, 105 (1994)
Y. Xiao, W.H. Hai, Phys. Lett. A 209, 99 (1995)
Y. Xiao, Y. Huang, X. Lin, Phys. Lett. A 235, 299 (1997)
S.F. Mingaleev, P.L. Christiansen, Y.B. Gaididei, M. Johansson, K.. Rasmussen, J. Biol. Phys. 25, 41 (1999)
L. Cruzeiro, J. Biol. Phys. 35, 43 (2009)
S. Takeno, J. Biol. Phys. 24, 185 (1999)
A.S. Davydov, Soliton in Molecular Systems (D. Reidel, Dordrecht, 1985)
P.L. Christiansen, A.C. Scott, Davydov Soliton Revisited (Plenum, New York, 1990)
Z. Sinkala, J. Theor. Biol. 241, 919 (2006)
P. Hamm, M. Lim, R.M. Hochstrasser, J. Phys. Chem. B 102, 6123 (1998)
S. Woutersen, P. Hamm, J. Phys.: Condens. Matter 14, R1035 (2002)
F.D. Adame, Phys. Lett. A 217, 59 (1996)
A.T. Hagler, E. Huler, S. Lifson, J. Am. Chem. Soc. 96, 5319 (1974)
C.N. Pace, J.M. Scholtz, G.R. Grimsley, FEBS Lett. 588, 2177 (2014)
A.F. Lawrence, J.C. McDaniel, D.B. Chang, R.R. Birge, Biophys. J. 51, 785 (1987)
S. Krimm, Y. Abe, Proc. Natl. Acad. Sci. U.S.A. 69, 2788 (1972)
A.M. Dikandé, Phys. Lett. A 220, 335 (1996)
M. Kac, E. Helfand, J. Math. Phys. 4, 1078 (1963)
G.A. Baker jr., Phys. Rev. 130, 1406 (1963)
A.M. Dikandé, T.C. Kofané, Physica D 83, 450 (1995)
A.M. Dikandé, Phys. Lett. A 369, 146 (2007)
S.K. Sarker, J.A. Krumhansl, Phys. Rev. B 23, 2374 (1981)
R.J. Glauber, Phys. Rev. 131, 776 (1958)
T.B. Benjamin, Proc. R. Soc. A 299, 59 (1967)
V.E. Zakharov, L.A. Ostrovsky, Physica D 238, 540 (2009)
A.M. Dikandé, Eur. Phys. J. B 55, 397 (2007)
V.B. Mborong, A.M. Dikandé, Int. J. Quantum Chem. 108, 189 (2008)
A.M. Dikandé, Phys. Rev. A 81, 013821 (2010)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Nji Nde Aboringong, E., M. Dikandé, A. Exciton dynamics in amide-I \( \alpha\) -helix protein chains with long-range intermolecular interactions. Eur. Phys. J. E 41, 35 (2018). https://doi.org/10.1140/epje/i2018-11640-9
Received:
Accepted:
Published:
DOI: https://doi.org/10.1140/epje/i2018-11640-9