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This article is cited in 1 scientific paper (total in 1 paper)
Spectroscopy and physics of atoms and molecules
Low-frequency vibrational modes in small polypeptides of essential amino acids
Alireza Kokabi, Hamidreza Ghanbari Khorram, Zeinab Meivand, Tina Bayatian, Ehsan Ghorbani Rad Department of Electrical Engineering, Hamedan University of Technology, 65155 Hamedan, Iran
Abstract:
The length-dependent low-frequency terahertz absorption spectrum of the essential amino acid chains has been investigated. Since this special type of amino acids cannot be synthesized inside the human body, the feasibility of noninvasively monitoring their deficiency is of significant importance. Here, the considered chains consist of two to six identical essential amino acids forming homogeneous polypeptides. The terahertz vibrational modes are calculated for different chain sizes of these polypeptides. The low-frequency terahertz spectra show unique and specific absorption peaks. Several fascinating patterns for the chain-size-dependent position of the peaks are reported here that are feasible of being applied for their noninvasive detection. For instance, different shared and identical characteristics peaks are observed for the specific polypeptides which are independent of the chain-size. Furthermore, it is shown that the observed trends for the maximum populated peak in some of the essential polypeptides can be considered as a possible footprint for in the terahertz spectrum.
Keywords:
essential amino acid chains, terahertz spectrum.
Received: 06.10.2018 Revised: 06.10.2018 Accepted: 15.03.2019
Citation:
Alireza Kokabi, Hamidreza Ghanbari Khorram, Zeinab Meivand, Tina Bayatian, Ehsan Ghorbani Rad, “Low-frequency vibrational modes in small polypeptides of essential amino acids”, Optics and Spectroscopy, 127:3 (2019), 411; Optics and Spectroscopy, 127:3 (2019), 434–445
Linking options:
https://www.mathnet.ru/eng/os606 https://www.mathnet.ru/eng/os/v127/i3/p411
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