Processing helix–coil transition data: Account of chain length and solvent effects

Numerous nanobiotechnologies include manipulations of short polypeptide chains. The conformational properties of these polypeptides are studied in vitro by circular dichroism and time-resolved infrared spectroscopy. To find out the interaction parameters, the measured temperature dependence of norma...

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Main Authors: Knarik Yeritsyan, Matjaz Valant, Artem Badasyan
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-10-01
Series:Frontiers in Nanotechnology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fnano.2022.982644/full
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author Knarik Yeritsyan
Matjaz Valant
Artem Badasyan
author_facet Knarik Yeritsyan
Matjaz Valant
Artem Badasyan
author_sort Knarik Yeritsyan
collection DOAJ
description Numerous nanobiotechnologies include manipulations of short polypeptide chains. The conformational properties of these polypeptides are studied in vitro by circular dichroism and time-resolved infrared spectroscopy. To find out the interaction parameters, the measured temperature dependence of normalized helicity degree needs to be further processed by fitting to a model. Using recent advances in the Hamiltonian formulation of the classical Zimm and Bragg model, we explicitly include chain length and solvent effects in the theoretical description. The expression for the helicity degree we suggest successfully fits the experimental data and provides hydrogen bonding energies and nucleation parameter values within the standards in the field.
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spelling doaj.art-b9ebb44bdf6b43ffbb0a286abb8045042022-12-22T03:32:04ZengFrontiers Media S.A.Frontiers in Nanotechnology2673-30132022-10-01410.3389/fnano.2022.982644982644Processing helix–coil transition data: Account of chain length and solvent effectsKnarik YeritsyanMatjaz ValantArtem BadasyanNumerous nanobiotechnologies include manipulations of short polypeptide chains. The conformational properties of these polypeptides are studied in vitro by circular dichroism and time-resolved infrared spectroscopy. To find out the interaction parameters, the measured temperature dependence of normalized helicity degree needs to be further processed by fitting to a model. Using recent advances in the Hamiltonian formulation of the classical Zimm and Bragg model, we explicitly include chain length and solvent effects in the theoretical description. The expression for the helicity degree we suggest successfully fits the experimental data and provides hydrogen bonding energies and nucleation parameter values within the standards in the field.https://www.frontiersin.org/articles/10.3389/fnano.2022.982644/fullshort polypeptide chainshelix-coildegree of helicitywater modelZimm and Bragg model
spellingShingle Knarik Yeritsyan
Matjaz Valant
Artem Badasyan
Processing helix–coil transition data: Account of chain length and solvent effects
Frontiers in Nanotechnology
short polypeptide chains
helix-coil
degree of helicity
water model
Zimm and Bragg model
title Processing helix–coil transition data: Account of chain length and solvent effects
title_full Processing helix–coil transition data: Account of chain length and solvent effects
title_fullStr Processing helix–coil transition data: Account of chain length and solvent effects
title_full_unstemmed Processing helix–coil transition data: Account of chain length and solvent effects
title_short Processing helix–coil transition data: Account of chain length and solvent effects
title_sort processing helix coil transition data account of chain length and solvent effects
topic short polypeptide chains
helix-coil
degree of helicity
water model
Zimm and Bragg model
url https://www.frontiersin.org/articles/10.3389/fnano.2022.982644/full
work_keys_str_mv AT knarikyeritsyan processinghelixcoiltransitiondataaccountofchainlengthandsolventeffects
AT matjazvalant processinghelixcoiltransitiondataaccountofchainlengthandsolventeffects
AT artembadasyan processinghelixcoiltransitiondataaccountofchainlengthandsolventeffects