Coordination forces between lipid bilayers produced by ferricyanide and Ca2+
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10451/10788 |
Resumo: | © 2011 Elsevier B.V. All rights reserved. |
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Coordination forces between lipid bilayers produced by ferricyanide and Ca2+Lipid membranesFerricyanideCa2+ ionsVesicle aggregationComplex adsorptionZeta potential© 2011 Elsevier B.V. All rights reserved.Attractive forces usually invoked to take place in membrane–membrane contact in aggregation are hydrogen bonding cross-linkings and hydrophobic interactions between opposing surfaces. However, little is known in relation to the presence of coordination forces in the membrane–membrane interaction. These are understood as those that may be favoured by the formation or the participation of coordination complexes between surface specific groups. In this work, we have analyzed the formation of this type of aggregates between phosphatidylcholine vesicles mediated by a coadsorption of ferricyanide and Ca2+ ions to the interface. The results obtained by surface potential measures, optical and electronic microscopy, FTIR and 1H NMR spectroscopies indicate that ferricyanide [Fe(CN)6]3− but not of ferrocyanide [Fe(CN)6]4− can form the complex when Ca2+ has been adsorbed previously to the membrane surface. In this condition, the anion is likely to act as a bridge between two opposing membranes causing a tight aggregation in which geometry and the polarizability of the ligands to Fe3+ play a role.ElsevierRepositório da Universidade de LisboaFrías, Maria A.Contis, GriseldaHollmann, AxelDisalvo, E. Anibal2014-03-27T14:41:45Z20122012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10451/10788engColloids and Surfaces B: Biointerfaces 91 (2012) 26– 330927-7765http://dx.doi.org/10.1016/j.colsurfb.2011.10.046metadata only accessinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-08T15:56:33Zoai:repositorio.ul.pt:10451/10788Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:34:42.103256Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Coordination forces between lipid bilayers produced by ferricyanide and Ca2+ |
title |
Coordination forces between lipid bilayers produced by ferricyanide and Ca2+ |
spellingShingle |
Coordination forces between lipid bilayers produced by ferricyanide and Ca2+ Frías, Maria A. Lipid membranes Ferricyanide Ca2+ ions Vesicle aggregation Complex adsorption Zeta potential |
title_short |
Coordination forces between lipid bilayers produced by ferricyanide and Ca2+ |
title_full |
Coordination forces between lipid bilayers produced by ferricyanide and Ca2+ |
title_fullStr |
Coordination forces between lipid bilayers produced by ferricyanide and Ca2+ |
title_full_unstemmed |
Coordination forces between lipid bilayers produced by ferricyanide and Ca2+ |
title_sort |
Coordination forces between lipid bilayers produced by ferricyanide and Ca2+ |
author |
Frías, Maria A. |
author_facet |
Frías, Maria A. Contis, Griselda Hollmann, Axel Disalvo, E. Anibal |
author_role |
author |
author2 |
Contis, Griselda Hollmann, Axel Disalvo, E. Anibal |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Frías, Maria A. Contis, Griselda Hollmann, Axel Disalvo, E. Anibal |
dc.subject.por.fl_str_mv |
Lipid membranes Ferricyanide Ca2+ ions Vesicle aggregation Complex adsorption Zeta potential |
topic |
Lipid membranes Ferricyanide Ca2+ ions Vesicle aggregation Complex adsorption Zeta potential |
description |
© 2011 Elsevier B.V. All rights reserved. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012 2012-01-01T00:00:00Z 2014-03-27T14:41:45Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10451/10788 |
url |
http://hdl.handle.net/10451/10788 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Colloids and Surfaces B: Biointerfaces 91 (2012) 26– 33 0927-7765 http://dx.doi.org/10.1016/j.colsurfb.2011.10.046 |
dc.rights.driver.fl_str_mv |
metadata only access info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
metadata only access |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799134242772353024 |