A Molecular Dynamic approach to the differential interaction between unsaturated free fatty acids and the nicotinic acetylcholine receptor
- Autores
- Obiol, Diego Javier; Amundarain, María Julia; Jaure, Omar David Argentino; Zamarreño, Fernando; Antollini, Silvia Susana; Costabel, M.
- Año de publicación
- 2019
- Idioma
- inglés
- Tipo de recurso
- documento de conferencia
- Estado
- versión publicada
- Descripción
- Free fatty acids (FFAs) are important cellular components that increase under certainpathological conditions. One of the effects of FFAs is a protection mechanism through themodulation of ion channels. The activity of the nicotinic acetylcholine receptor (nAchR) isblocked by certain FFAs and its binding site is located at the lipid-protein interface. Theobjective of this work was to determine, by means of molecular dynamics (MD), thepossible points of contact and the effect produced by five different FFAs, located inannular and non-annular sites. The study was carried out on a system composed by amodel of AChR from Torpedo marmorata (PDB ID: 2BG9) that was elaborated from PDBID: 4COF as a template because the e-values were the lowest for each subunit andbecause it represented the closed desensitized state. The evaluation of thestereochemical parameters for the refined model was improved with respect to 2BG9.The refined model was incorporated into a lipid bilayer composed with a ratio of 1:1:3 ofcholesterol, POPA and POPC respectively. We replaced three phospholipids from the lipidbilayer with three of the corresponding free fatty acids: cis-18:1ω-6, cis-18:1ω-9,cis-18:1ω-11, cis-18:1ω-13 and trans-18:1ω-9 in annular or non-annular areas. From theMD runs we obtained the most statistically relevant conformations of each FFAs in eachof the systems, we determined the possible contacts with residues of the nAChR and theresulting profile of pore radius. In general, the results show that more contacts areestablished when FFAs are located in non-annular regions. As expected, contacts areestablished in a much greater proportion with non-polar residues. cis-18:1ω-11 in nonannular sites leads to conformations that open the pore of the channel, while in annularsites it stabilizes the desensitized state. With cis-18:1ω-13 a similar behavior isobserved, although in non-annular sites it produces a pronounced constriction in theextracellular domain.
Fil: Obiol, Diego Javier. Universidad Nacional del Sur. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina
Fil: Amundarain, María Julia. Universidad Nacional del Sur. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina
Fil: Jaure, Omar David Argentino. Universidad Nacional del Sur. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina
Fil: Zamarreño, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina
Fil: Antollini, Silvia Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Investigaciones Bioquímicas de Bahía Blanca. Universidad Nacional del Sur. Instituto de Investigaciones Bioquímicas de Bahía Blanca; Argentina
Fil: Costabel, M.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina
XLVIII Reunión Anual de la Sociedad Argentina de Biofísica
San Luis
Argentina
Sociedad Argentina de Biofísica - Materia
-
nicotinic acetylcholine receptor
free fatty acids
molecular dynamic
lipid bilayer - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/153805
Ver los metadatos del registro completo
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A Molecular Dynamic approach to the differential interaction between unsaturated free fatty acids and the nicotinic acetylcholine receptorObiol, Diego JavierAmundarain, María JuliaJaure, Omar David ArgentinoZamarreño, FernandoAntollini, Silvia SusanaCostabel, M.nicotinic acetylcholine receptorfree fatty acidsmolecular dynamiclipid bilayerhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Free fatty acids (FFAs) are important cellular components that increase under certainpathological conditions. One of the effects of FFAs is a protection mechanism through themodulation of ion channels. The activity of the nicotinic acetylcholine receptor (nAchR) isblocked by certain FFAs and its binding site is located at the lipid-protein interface. Theobjective of this work was to determine, by means of molecular dynamics (MD), thepossible points of contact and the effect produced by five different FFAs, located inannular and non-annular sites. The study was carried out on a system composed by amodel of AChR from Torpedo marmorata (PDB ID: 2BG9) that was elaborated from PDBID: 4COF as a template because the e-values were the lowest for each subunit andbecause it represented the closed desensitized state. The evaluation of thestereochemical parameters for the refined model was improved with respect to 2BG9.The refined model was incorporated into a lipid bilayer composed with a ratio of 1:1:3 ofcholesterol, POPA and POPC respectively. We replaced three phospholipids from the lipidbilayer with three of the corresponding free fatty acids: cis-18:1ω-6, cis-18:1ω-9,cis-18:1ω-11, cis-18:1ω-13 and trans-18:1ω-9 in annular or non-annular areas. From theMD runs we obtained the most statistically relevant conformations of each FFAs in eachof the systems, we determined the possible contacts with residues of the nAChR and theresulting profile of pore radius. In general, the results show that more contacts areestablished when FFAs are located in non-annular regions. As expected, contacts areestablished in a much greater proportion with non-polar residues. cis-18:1ω-11 in nonannular sites leads to conformations that open the pore of the channel, while in annularsites it stabilizes the desensitized state. With cis-18:1ω-13 a similar behavior isobserved, although in non-annular sites it produces a pronounced constriction in theextracellular domain.Fil: Obiol, Diego Javier. Universidad Nacional del Sur. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; ArgentinaFil: Amundarain, María Julia. Universidad Nacional del Sur. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; ArgentinaFil: Jaure, Omar David Argentino. Universidad Nacional del Sur. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; ArgentinaFil: Zamarreño, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; ArgentinaFil: Antollini, Silvia Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Investigaciones Bioquímicas de Bahía Blanca. Universidad Nacional del Sur. Instituto de Investigaciones Bioquímicas de Bahía Blanca; ArgentinaFil: Costabel, M.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; ArgentinaXLVIII Reunión Anual de la Sociedad Argentina de BiofísicaSan LuisArgentinaSociedad Argentina de BiofísicaSociedad Argentina de BiofísicaAndujar, Sebastian Antonio2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectReuniónBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/153805A Molecular Dynamic approach to the differential interaction between unsaturated free fatty acids and the nicotinic acetylcholine receptor; XLVIII Reunión Anual de la Sociedad Argentina de Biofísica; San Luis; Argentina; 2019; 1-4978-987-27591-7-9CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://biofisica.org.arinfo:eu-repo/semantics/altIdentifier/url/https://biofisica.org.ar/reuniones-cientificas/reunionsab-previas/Nacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:35:47Zoai:ri.conicet.gov.ar:11336/153805instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:35:48.104CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
A Molecular Dynamic approach to the differential interaction between unsaturated free fatty acids and the nicotinic acetylcholine receptor |
title |
A Molecular Dynamic approach to the differential interaction between unsaturated free fatty acids and the nicotinic acetylcholine receptor |
spellingShingle |
A Molecular Dynamic approach to the differential interaction between unsaturated free fatty acids and the nicotinic acetylcholine receptor Obiol, Diego Javier nicotinic acetylcholine receptor free fatty acids molecular dynamic lipid bilayer |
title_short |
A Molecular Dynamic approach to the differential interaction between unsaturated free fatty acids and the nicotinic acetylcholine receptor |
title_full |
A Molecular Dynamic approach to the differential interaction between unsaturated free fatty acids and the nicotinic acetylcholine receptor |
title_fullStr |
A Molecular Dynamic approach to the differential interaction between unsaturated free fatty acids and the nicotinic acetylcholine receptor |
title_full_unstemmed |
A Molecular Dynamic approach to the differential interaction between unsaturated free fatty acids and the nicotinic acetylcholine receptor |
title_sort |
A Molecular Dynamic approach to the differential interaction between unsaturated free fatty acids and the nicotinic acetylcholine receptor |
dc.creator.none.fl_str_mv |
Obiol, Diego Javier Amundarain, María Julia Jaure, Omar David Argentino Zamarreño, Fernando Antollini, Silvia Susana Costabel, M. |
author |
Obiol, Diego Javier |
author_facet |
Obiol, Diego Javier Amundarain, María Julia Jaure, Omar David Argentino Zamarreño, Fernando Antollini, Silvia Susana Costabel, M. |
author_role |
author |
author2 |
Amundarain, María Julia Jaure, Omar David Argentino Zamarreño, Fernando Antollini, Silvia Susana Costabel, M. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Andujar, Sebastian Antonio |
dc.subject.none.fl_str_mv |
nicotinic acetylcholine receptor free fatty acids molecular dynamic lipid bilayer |
topic |
nicotinic acetylcholine receptor free fatty acids molecular dynamic lipid bilayer |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Free fatty acids (FFAs) are important cellular components that increase under certainpathological conditions. One of the effects of FFAs is a protection mechanism through themodulation of ion channels. The activity of the nicotinic acetylcholine receptor (nAchR) isblocked by certain FFAs and its binding site is located at the lipid-protein interface. Theobjective of this work was to determine, by means of molecular dynamics (MD), thepossible points of contact and the effect produced by five different FFAs, located inannular and non-annular sites. The study was carried out on a system composed by amodel of AChR from Torpedo marmorata (PDB ID: 2BG9) that was elaborated from PDBID: 4COF as a template because the e-values were the lowest for each subunit andbecause it represented the closed desensitized state. The evaluation of thestereochemical parameters for the refined model was improved with respect to 2BG9.The refined model was incorporated into a lipid bilayer composed with a ratio of 1:1:3 ofcholesterol, POPA and POPC respectively. We replaced three phospholipids from the lipidbilayer with three of the corresponding free fatty acids: cis-18:1ω-6, cis-18:1ω-9,cis-18:1ω-11, cis-18:1ω-13 and trans-18:1ω-9 in annular or non-annular areas. From theMD runs we obtained the most statistically relevant conformations of each FFAs in eachof the systems, we determined the possible contacts with residues of the nAChR and theresulting profile of pore radius. In general, the results show that more contacts areestablished when FFAs are located in non-annular regions. As expected, contacts areestablished in a much greater proportion with non-polar residues. cis-18:1ω-11 in nonannular sites leads to conformations that open the pore of the channel, while in annularsites it stabilizes the desensitized state. With cis-18:1ω-13 a similar behavior isobserved, although in non-annular sites it produces a pronounced constriction in theextracellular domain. Fil: Obiol, Diego Javier. Universidad Nacional del Sur. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina Fil: Amundarain, María Julia. Universidad Nacional del Sur. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina Fil: Jaure, Omar David Argentino. Universidad Nacional del Sur. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina Fil: Zamarreño, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina Fil: Antollini, Silvia Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Investigaciones Bioquímicas de Bahía Blanca. Universidad Nacional del Sur. Instituto de Investigaciones Bioquímicas de Bahía Blanca; Argentina Fil: Costabel, M.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina XLVIII Reunión Anual de la Sociedad Argentina de Biofísica San Luis Argentina Sociedad Argentina de Biofísica |
description |
Free fatty acids (FFAs) are important cellular components that increase under certainpathological conditions. One of the effects of FFAs is a protection mechanism through themodulation of ion channels. The activity of the nicotinic acetylcholine receptor (nAchR) isblocked by certain FFAs and its binding site is located at the lipid-protein interface. Theobjective of this work was to determine, by means of molecular dynamics (MD), thepossible points of contact and the effect produced by five different FFAs, located inannular and non-annular sites. The study was carried out on a system composed by amodel of AChR from Torpedo marmorata (PDB ID: 2BG9) that was elaborated from PDBID: 4COF as a template because the e-values were the lowest for each subunit andbecause it represented the closed desensitized state. The evaluation of thestereochemical parameters for the refined model was improved with respect to 2BG9.The refined model was incorporated into a lipid bilayer composed with a ratio of 1:1:3 ofcholesterol, POPA and POPC respectively. We replaced three phospholipids from the lipidbilayer with three of the corresponding free fatty acids: cis-18:1ω-6, cis-18:1ω-9,cis-18:1ω-11, cis-18:1ω-13 and trans-18:1ω-9 in annular or non-annular areas. From theMD runs we obtained the most statistically relevant conformations of each FFAs in eachof the systems, we determined the possible contacts with residues of the nAChR and theresulting profile of pore radius. In general, the results show that more contacts areestablished when FFAs are located in non-annular regions. As expected, contacts areestablished in a much greater proportion with non-polar residues. cis-18:1ω-11 in nonannular sites leads to conformations that open the pore of the channel, while in annularsites it stabilizes the desensitized state. With cis-18:1ω-13 a similar behavior isobserved, although in non-annular sites it produces a pronounced constriction in theextracellular domain. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/conferenceObject Reunión Book http://purl.org/coar/resource_type/c_5794 info:ar-repo/semantics/documentoDeConferencia |
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publishedVersion |
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http://hdl.handle.net/11336/153805 A Molecular Dynamic approach to the differential interaction between unsaturated free fatty acids and the nicotinic acetylcholine receptor; XLVIII Reunión Anual de la Sociedad Argentina de Biofísica; San Luis; Argentina; 2019; 1-4 978-987-27591-7-9 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/153805 |
identifier_str_mv |
A Molecular Dynamic approach to the differential interaction between unsaturated free fatty acids and the nicotinic acetylcholine receptor; XLVIII Reunión Anual de la Sociedad Argentina de Biofísica; San Luis; Argentina; 2019; 1-4 978-987-27591-7-9 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
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info:eu-repo/semantics/altIdentifier/url/https://biofisica.org.ar info:eu-repo/semantics/altIdentifier/url/https://biofisica.org.ar/reuniones-cientificas/reunionsab-previas/ |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
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Nacional |
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Sociedad Argentina de Biofísica |
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Sociedad Argentina de Biofísica |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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