View in EDS HTML Full Text PDF Full Text

Conformational Rearrangements of Adsorbed Polyampholytes under Periodic Changes in Polarity of a Charged Prolate Gold Nanospheroid.

Saved in:
Bibliographic Details
Title: Conformational Rearrangements of Adsorbed Polyampholytes under Periodic Changes in Polarity of a Charged Prolate Gold Nanospheroid.
Authors: Kruchinin, N. Yu.1 (AUTHOR) kruchinin_56@mail.ru, Kucherenko, M. G.1 (AUTHOR), Neyasov, P. P.1 (AUTHOR)
Source: High Energy Chemistry. Dec2023, Vol. 57 Issue 6, p459-471. 13p.
Subjects: Polyampholytes, Molecular dynamics, Gold nanoparticles, Gold, Nanoparticles
Abstract: Conformational rearrangements of polyampholytic polypeptides adsorbed on the surface of a charged prolate gold nanospheroid with a periodic change in time of its polarity along the rotation axis have been studied using molecular dynamics simulation. The radial distributions of the density of polypeptide atoms in the equatorial region of the nanospheroid have been calculated, as well as the distributions of the linear density of polypeptide atoms along the major axis of the nanospheroid. At a low simulation temperature, a girdle polyampholytic fringe was formed in the central region of the nanospheroid and its ordering by layers, depending on the type of units, occurred with an increase in the charge of the nanospheroid with a simultaneous increase in the width of the macromolecular fringe along the rotation axis. The thickness of such a fringe along the cross section depends on the distance between the oppositely charged units in the polyampholyte. At high temperatures and high absolute values of the total charge of the spheroidal nanoparticle, there were periodic displacements of the polyampholytic fringe toward the poles of the nanospheroid, being in antiphase for oppositely charged metallic nanospheroids. A mathematical model is presented for describing the conformational structure of a polyampholyte macromolecule on a prolate nanospheroid in an alternating electric field with the approximation of a prolate spheroid by a spherical cylinder. [ABSTRACT FROM AUTHOR]
Copyright of High Energy Chemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: egs
DbLabel: Engineering Source
An: 173926326
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Conformational Rearrangements of Adsorbed Polyampholytes under Periodic Changes in Polarity of a Charged Prolate Gold Nanospheroid.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Kruchinin%2C+N%2E+Yu%2E%22">Kruchinin, N. Yu.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> kruchinin_56@mail.ru</i><br /><searchLink fieldCode="AR" term="%22Kucherenko%2C+M%2E+G%2E%22">Kucherenko, M. G.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Neyasov%2C+P%2E+P%2E%22">Neyasov, P. P.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22High+Energy+Chemistry%22">High Energy Chemistry</searchLink>. Dec2023, Vol. 57 Issue 6, p459-471. 13p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Polyampholytes%22">Polyampholytes</searchLink><br /><searchLink fieldCode="DE" term="%22Molecular+dynamics%22">Molecular dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Gold+nanoparticles%22">Gold nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Gold%22">Gold</searchLink><br /><searchLink fieldCode="DE" term="%22Nanoparticles%22">Nanoparticles</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Conformational rearrangements of polyampholytic polypeptides adsorbed on the surface of a charged prolate gold nanospheroid with a periodic change in time of its polarity along the rotation axis have been studied using molecular dynamics simulation. The radial distributions of the density of polypeptide atoms in the equatorial region of the nanospheroid have been calculated, as well as the distributions of the linear density of polypeptide atoms along the major axis of the nanospheroid. At a low simulation temperature, a girdle polyampholytic fringe was formed in the central region of the nanospheroid and its ordering by layers, depending on the type of units, occurred with an increase in the charge of the nanospheroid with a simultaneous increase in the width of the macromolecular fringe along the rotation axis. The thickness of such a fringe along the cross section depends on the distance between the oppositely charged units in the polyampholyte. At high temperatures and high absolute values of the total charge of the spheroidal nanoparticle, there were periodic displacements of the polyampholytic fringe toward the poles of the nanospheroid, being in antiphase for oppositely charged metallic nanospheroids. A mathematical model is presented for describing the conformational structure of a polyampholyte macromolecule on a prolate nanospheroid in an alternating electric field with the approximation of a prolate spheroid by a spherical cylinder. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of High Energy Chemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=173926326
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1134/S0018143923060073
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 459
    Subjects:
      – SubjectFull: Polyampholytes
        Type: general
      – SubjectFull: Molecular dynamics
        Type: general
      – SubjectFull: Gold nanoparticles
        Type: general
      – SubjectFull: Gold
        Type: general
      – SubjectFull: Nanoparticles
        Type: general
    Titles:
      – TitleFull: Conformational Rearrangements of Adsorbed Polyampholytes under Periodic Changes in Polarity of a Charged Prolate Gold Nanospheroid.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Kruchinin, N. Yu.
      – PersonEntity:
          Name:
            NameFull: Kucherenko, M. G.
      – PersonEntity:
          Name:
            NameFull: Neyasov, P. P.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 12
              Text: Dec2023
              Type: published
              Y: 2023
          Identifiers:
            – Type: issn-print
              Value: 00181439
          Numbering:
            – Type: volume
              Value: 57
            – Type: issue
              Value: 6
          Titles:
            – TitleFull: High Energy Chemistry
              Type: main
ResultId 1