Self-homodimerization of an actinoporin by disulfide bridging reveals implications for their structure and pore formation
- Autores
- Valle, Aisel; Pérez Socas, Luis Benito; Canet, Liem; Hervis, Yadira De La Patria; De Armas Guitart, German; Martins De Sa, Diogo; Lima, Jônatas Cunha Barbosa; Souza, Adolfo Carlos Barros; Barbosa, João Alexandre Ribeiro Gonçalves; De Freitas, Sonia Maria; Pazos, Isabel Fabiola
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The Trp111 to Cys mutant of sticholysin I, an actinoporin from Stichodactyla helianthus sea anemone, forms a homodimer via a disulfide bridge. The purified dimer is 193 times less hemolytic than the monomer. Ultracentrifugation, dynamic light scattering and size-exclusion chromatography demonstrate that monomers and dimers are the only independent oligomeric states encountered. Indeed, circular dichroism and fluorescence spectroscopies showed that Trp/Tyr residues participate in homodimerization and that the dimer is less thermostable than the monomer. A homodimer three-dimensional model was constructed and indicates that Trp147/Tyr137 are at the homodimer interface. Spectroscopy results validated the 3D-model and assigned 85° to the disulfide bridge dihedral angle responsible for dimerization. The homodimer model suggests that alterations in the membrane/carbohydrate-binding sites in one of the monomers, as result of dimerization, could explain the decrease in the homodimer ability to form pores.
Fil: Valle, Aisel. Universidad de La Habana; Cuba
Fil: Pérez Socas, Luis Benito. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina. Universidad de La Habana; Cuba
Fil: Canet, Liem. Universidad de La Habana; Cuba
Fil: Hervis, Yadira De La Patria. Universidad de La Habana; Cuba
Fil: De Armas Guitart, German. Universidad de La Habana; Cuba
Fil: Martins De Sa, Diogo. Universidade do Brasília; Brasil
Fil: Lima, Jônatas Cunha Barbosa. Universidade do Brasília; Brasil
Fil: Souza, Adolfo Carlos Barros. Universidade do Brasília; Brasil
Fil: Barbosa, João Alexandre Ribeiro Gonçalves. Universidade do Brasília; Brasil
Fil: De Freitas, Sonia Maria. Universidade do Brasília; Brasil
Fil: Pazos, Isabel Fabiola. Universidad de La Habana; Cuba - Materia
- Pore-formin toxin
- 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:11336/97226
Ver los metadatos del registro completo
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oai:ri.conicet.gov.ar:11336/97226 |
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CONICET Digital (CONICET) |
spelling |
Self-homodimerization of an actinoporin by disulfide bridging reveals implications for their structure and pore formationValle, AiselPérez Socas, Luis BenitoCanet, LiemHervis, Yadira De La PatriaDe Armas Guitart, GermanMartins De Sa, DiogoLima, Jônatas Cunha BarbosaSouza, Adolfo Carlos BarrosBarbosa, João Alexandre Ribeiro GonçalvesDe Freitas, Sonia MariaPazos, Isabel FabiolaPore-formin toxinhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The Trp111 to Cys mutant of sticholysin I, an actinoporin from Stichodactyla helianthus sea anemone, forms a homodimer via a disulfide bridge. The purified dimer is 193 times less hemolytic than the monomer. Ultracentrifugation, dynamic light scattering and size-exclusion chromatography demonstrate that monomers and dimers are the only independent oligomeric states encountered. Indeed, circular dichroism and fluorescence spectroscopies showed that Trp/Tyr residues participate in homodimerization and that the dimer is less thermostable than the monomer. A homodimer three-dimensional model was constructed and indicates that Trp147/Tyr137 are at the homodimer interface. Spectroscopy results validated the 3D-model and assigned 85° to the disulfide bridge dihedral angle responsible for dimerization. The homodimer model suggests that alterations in the membrane/carbohydrate-binding sites in one of the monomers, as result of dimerization, could explain the decrease in the homodimer ability to form pores.Fil: Valle, Aisel. Universidad de La Habana; CubaFil: Pérez Socas, Luis Benito. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina. Universidad de La Habana; CubaFil: Canet, Liem. Universidad de La Habana; CubaFil: Hervis, Yadira De La Patria. Universidad de La Habana; CubaFil: De Armas Guitart, German. Universidad de La Habana; CubaFil: Martins De Sa, Diogo. Universidade do Brasília; BrasilFil: Lima, Jônatas Cunha Barbosa. Universidade do Brasília; BrasilFil: Souza, Adolfo Carlos Barros. Universidade do Brasília; BrasilFil: Barbosa, João Alexandre Ribeiro Gonçalves. Universidade do Brasília; BrasilFil: De Freitas, Sonia Maria. Universidade do Brasília; BrasilFil: Pazos, Isabel Fabiola. Universidad de La Habana; CubaNature Publishing Group2018-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/97226Valle, Aisel; Pérez Socas, Luis Benito; Canet, Liem; Hervis, Yadira De La Patria; De Armas Guitart, German; et al.; Self-homodimerization of an actinoporin by disulfide bridging reveals implications for their structure and pore formation; Nature Publishing Group; Scientific Reports; 8; 1; 12-20182045-2322CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/s41598-018-24688-2info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-018-24688-2info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:27:15Zoai:ri.conicet.gov.ar:11336/97226instacron: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 10:27:15.316CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Self-homodimerization of an actinoporin by disulfide bridging reveals implications for their structure and pore formation |
title |
Self-homodimerization of an actinoporin by disulfide bridging reveals implications for their structure and pore formation |
spellingShingle |
Self-homodimerization of an actinoporin by disulfide bridging reveals implications for their structure and pore formation Valle, Aisel Pore-formin toxin |
title_short |
Self-homodimerization of an actinoporin by disulfide bridging reveals implications for their structure and pore formation |
title_full |
Self-homodimerization of an actinoporin by disulfide bridging reveals implications for their structure and pore formation |
title_fullStr |
Self-homodimerization of an actinoporin by disulfide bridging reveals implications for their structure and pore formation |
title_full_unstemmed |
Self-homodimerization of an actinoporin by disulfide bridging reveals implications for their structure and pore formation |
title_sort |
Self-homodimerization of an actinoporin by disulfide bridging reveals implications for their structure and pore formation |
dc.creator.none.fl_str_mv |
Valle, Aisel Pérez Socas, Luis Benito Canet, Liem Hervis, Yadira De La Patria De Armas Guitart, German Martins De Sa, Diogo Lima, Jônatas Cunha Barbosa Souza, Adolfo Carlos Barros Barbosa, João Alexandre Ribeiro Gonçalves De Freitas, Sonia Maria Pazos, Isabel Fabiola |
author |
Valle, Aisel |
author_facet |
Valle, Aisel Pérez Socas, Luis Benito Canet, Liem Hervis, Yadira De La Patria De Armas Guitart, German Martins De Sa, Diogo Lima, Jônatas Cunha Barbosa Souza, Adolfo Carlos Barros Barbosa, João Alexandre Ribeiro Gonçalves De Freitas, Sonia Maria Pazos, Isabel Fabiola |
author_role |
author |
author2 |
Pérez Socas, Luis Benito Canet, Liem Hervis, Yadira De La Patria De Armas Guitart, German Martins De Sa, Diogo Lima, Jônatas Cunha Barbosa Souza, Adolfo Carlos Barros Barbosa, João Alexandre Ribeiro Gonçalves De Freitas, Sonia Maria Pazos, Isabel Fabiola |
author2_role |
author author author author author author author author author author |
dc.subject.none.fl_str_mv |
Pore-formin toxin |
topic |
Pore-formin toxin |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The Trp111 to Cys mutant of sticholysin I, an actinoporin from Stichodactyla helianthus sea anemone, forms a homodimer via a disulfide bridge. The purified dimer is 193 times less hemolytic than the monomer. Ultracentrifugation, dynamic light scattering and size-exclusion chromatography demonstrate that monomers and dimers are the only independent oligomeric states encountered. Indeed, circular dichroism and fluorescence spectroscopies showed that Trp/Tyr residues participate in homodimerization and that the dimer is less thermostable than the monomer. A homodimer three-dimensional model was constructed and indicates that Trp147/Tyr137 are at the homodimer interface. Spectroscopy results validated the 3D-model and assigned 85° to the disulfide bridge dihedral angle responsible for dimerization. The homodimer model suggests that alterations in the membrane/carbohydrate-binding sites in one of the monomers, as result of dimerization, could explain the decrease in the homodimer ability to form pores. Fil: Valle, Aisel. Universidad de La Habana; Cuba Fil: Pérez Socas, Luis Benito. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina. Universidad de La Habana; Cuba Fil: Canet, Liem. Universidad de La Habana; Cuba Fil: Hervis, Yadira De La Patria. Universidad de La Habana; Cuba Fil: De Armas Guitart, German. Universidad de La Habana; Cuba Fil: Martins De Sa, Diogo. Universidade do Brasília; Brasil Fil: Lima, Jônatas Cunha Barbosa. Universidade do Brasília; Brasil Fil: Souza, Adolfo Carlos Barros. Universidade do Brasília; Brasil Fil: Barbosa, João Alexandre Ribeiro Gonçalves. Universidade do Brasília; Brasil Fil: De Freitas, Sonia Maria. Universidade do Brasília; Brasil Fil: Pazos, Isabel Fabiola. Universidad de La Habana; Cuba |
description |
The Trp111 to Cys mutant of sticholysin I, an actinoporin from Stichodactyla helianthus sea anemone, forms a homodimer via a disulfide bridge. The purified dimer is 193 times less hemolytic than the monomer. Ultracentrifugation, dynamic light scattering and size-exclusion chromatography demonstrate that monomers and dimers are the only independent oligomeric states encountered. Indeed, circular dichroism and fluorescence spectroscopies showed that Trp/Tyr residues participate in homodimerization and that the dimer is less thermostable than the monomer. A homodimer three-dimensional model was constructed and indicates that Trp147/Tyr137 are at the homodimer interface. Spectroscopy results validated the 3D-model and assigned 85° to the disulfide bridge dihedral angle responsible for dimerization. The homodimer model suggests that alterations in the membrane/carbohydrate-binding sites in one of the monomers, as result of dimerization, could explain the decrease in the homodimer ability to form pores. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/97226 Valle, Aisel; Pérez Socas, Luis Benito; Canet, Liem; Hervis, Yadira De La Patria; De Armas Guitart, German; et al.; Self-homodimerization of an actinoporin by disulfide bridging reveals implications for their structure and pore formation; Nature Publishing Group; Scientific Reports; 8; 1; 12-2018 2045-2322 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/97226 |
identifier_str_mv |
Valle, Aisel; Pérez Socas, Luis Benito; Canet, Liem; Hervis, Yadira De La Patria; De Armas Guitart, German; et al.; Self-homodimerization of an actinoporin by disulfide bridging reveals implications for their structure and pore formation; Nature Publishing Group; Scientific Reports; 8; 1; 12-2018 2045-2322 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/s41598-018-24688-2 info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-018-24688-2 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Nature Publishing Group |
publisher.none.fl_str_mv |
Nature Publishing Group |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844614274475884544 |
score |
13.070432 |