HIV-1 BF intersubtype recombinant Vpu second alpha helix plays an important role in the viral release and BST-2 degradation
- Autores
- de Candia, Cristian Ariel; Espada, Constanza Eleonora; Duette, Gabriel; Salomon, Horacio Eduardo; Carobene, Mauricio
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We previously reported a naturally occurring BF intersubtype recombinant Vpu variant with augmented capacity to enhance viral replication. Structural analysis of this variant revealed that its transmembrane domain (TMD) and α-helix I in the cytoplasmic domain (CTD) corresponded to subtype B, whereas CTD α-helix II corresponded to subtype F1. This work was aimed at evaluating the role of Vpu CTD α-helix II domain on viral release enhancement and down-modulation of BST-2 and CD4 from cell surface. In addition, as serine residues in either Vpu amino acid positions 61 or 64 have been shown to regulate Vpu intracellular half-life, which in turn could influence the magnitude of viral release, we also studied the impact of these residues in the BF Vpu functions, since S61 and S64 are infrequently found among BF recombinant Vpu variants. Our results showed that interchange of Vpu α-helix II between subtypes (B→F) directly correlated with enhancement of viral release and, to a lesser extent, with changes in the capacity to down-modulate BST-2 and CD4 of the resulting chimera. No statistical differences on viral release and BST-2 down-modulation were observed between Vpu BF and VpuBF E61S. On the other hand, VpuBF A64S showed a slightly reduced capacity to enhance viral production but was modestly more efficient than VpuBF in down-modulating BST-2. In summary, our observations clearly evidence that α-helix II is actively involved in Vpu viral release-promoting activity, and that intersubtype recombination between subtypes B and F1 originated a protein variant with higher potential to boost the spread of the recombinant strain that harbors it.
Fil: de Candia, Cristian Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas en Retrovirus y Sida; Argentina;
Fil: Espada, Constanza Eleonora. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Microbiologia. Centro Nacional de Referencia del Sida; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas en Retrovirus y Sida; Argentina;
Fil: Duette, Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas en Retrovirus y Sida; Argentina; Universidad de Buenos Aires. Facultad de Medicina. Departamento de Microbiología; Argentina;
Fil: Salomon, Horacio Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas en Retrovirus y Sida; Argentina; Universidad de Buenos Aires. Facultad de Medicina. Departamento de Microbiología; Argentina;
Fil: Carobene, Mauricio. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Microbiologia. Centro Nacional de Referencia del Sida; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas en Retrovirus y Sida; Argentina; - Materia
-
HIV-1
Vpu
Recombination
Viral release - 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:11336/1808
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HIV-1 BF intersubtype recombinant Vpu second alpha helix plays an important role in the viral release and BST-2 degradationde Candia, Cristian ArielEspada, Constanza EleonoraDuette, GabrielSalomon, Horacio EduardoCarobene, MauricioHIV-1VpuRecombinationViral releasehttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1We previously reported a naturally occurring BF intersubtype recombinant Vpu variant with augmented capacity to enhance viral replication. Structural analysis of this variant revealed that its transmembrane domain (TMD) and α-helix I in the cytoplasmic domain (CTD) corresponded to subtype B, whereas CTD α-helix II corresponded to subtype F1. This work was aimed at evaluating the role of Vpu CTD α-helix II domain on viral release enhancement and down-modulation of BST-2 and CD4 from cell surface. In addition, as serine residues in either Vpu amino acid positions 61 or 64 have been shown to regulate Vpu intracellular half-life, which in turn could influence the magnitude of viral release, we also studied the impact of these residues in the BF Vpu functions, since S61 and S64 are infrequently found among BF recombinant Vpu variants. Our results showed that interchange of Vpu α-helix II between subtypes (B→F) directly correlated with enhancement of viral release and, to a lesser extent, with changes in the capacity to down-modulate BST-2 and CD4 of the resulting chimera. No statistical differences on viral release and BST-2 down-modulation were observed between Vpu BF and VpuBF E61S. On the other hand, VpuBF A64S showed a slightly reduced capacity to enhance viral production but was modestly more efficient than VpuBF in down-modulating BST-2. In summary, our observations clearly evidence that α-helix II is actively involved in Vpu viral release-promoting activity, and that intersubtype recombination between subtypes B and F1 originated a protein variant with higher potential to boost the spread of the recombinant strain that harbors it.Fil: de Candia, Cristian Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas en Retrovirus y Sida; Argentina;Fil: Espada, Constanza Eleonora. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Microbiologia. Centro Nacional de Referencia del Sida; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas en Retrovirus y Sida; Argentina;Fil: Duette, Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas en Retrovirus y Sida; Argentina; Universidad de Buenos Aires. Facultad de Medicina. Departamento de Microbiología; Argentina;Fil: Salomon, Horacio Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas en Retrovirus y Sida; Argentina; Universidad de Buenos Aires. Facultad de Medicina. Departamento de Microbiología; Argentina;Fil: Carobene, Mauricio. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Microbiologia. Centro Nacional de Referencia del Sida; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas en Retrovirus y Sida; Argentina;Society for General Microbiology2013-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/1808de Candia, Cristian Ariel; Espada, Constanza Eleonora; Duette, Gabriel; Salomon, Horacio Eduardo; Carobene, Mauricio; HIV-1 BF intersubtype recombinant Vpu second alpha helix plays an important role in the viral release and BST-2 degradation; Society for General Microbiology; Journal of General Virology; 94; 4-2013; 758-7660022-1317enginfo:eu-repo/semantics/altIdentifier/doi/doi:10.1099/vir.0.047746-0info:eu-repo/semantics/altIdentifier/url/http://jgv.sgmjournals.org/content/journal/jgv/10.1099/vir.0.047746-0?crawler=true&mimetype=application/pdfinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:43:13Zoai:ri.conicet.gov.ar:11336/1808instacron: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 10:43:13.824CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
HIV-1 BF intersubtype recombinant Vpu second alpha helix plays an important role in the viral release and BST-2 degradation |
title |
HIV-1 BF intersubtype recombinant Vpu second alpha helix plays an important role in the viral release and BST-2 degradation |
spellingShingle |
HIV-1 BF intersubtype recombinant Vpu second alpha helix plays an important role in the viral release and BST-2 degradation de Candia, Cristian Ariel HIV-1 Vpu Recombination Viral release |
title_short |
HIV-1 BF intersubtype recombinant Vpu second alpha helix plays an important role in the viral release and BST-2 degradation |
title_full |
HIV-1 BF intersubtype recombinant Vpu second alpha helix plays an important role in the viral release and BST-2 degradation |
title_fullStr |
HIV-1 BF intersubtype recombinant Vpu second alpha helix plays an important role in the viral release and BST-2 degradation |
title_full_unstemmed |
HIV-1 BF intersubtype recombinant Vpu second alpha helix plays an important role in the viral release and BST-2 degradation |
title_sort |
HIV-1 BF intersubtype recombinant Vpu second alpha helix plays an important role in the viral release and BST-2 degradation |
dc.creator.none.fl_str_mv |
de Candia, Cristian Ariel Espada, Constanza Eleonora Duette, Gabriel Salomon, Horacio Eduardo Carobene, Mauricio |
author |
de Candia, Cristian Ariel |
author_facet |
de Candia, Cristian Ariel Espada, Constanza Eleonora Duette, Gabriel Salomon, Horacio Eduardo Carobene, Mauricio |
author_role |
author |
author2 |
Espada, Constanza Eleonora Duette, Gabriel Salomon, Horacio Eduardo Carobene, Mauricio |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
HIV-1 Vpu Recombination Viral release |
topic |
HIV-1 Vpu Recombination Viral release |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
We previously reported a naturally occurring BF intersubtype recombinant Vpu variant with augmented capacity to enhance viral replication. Structural analysis of this variant revealed that its transmembrane domain (TMD) and α-helix I in the cytoplasmic domain (CTD) corresponded to subtype B, whereas CTD α-helix II corresponded to subtype F1. This work was aimed at evaluating the role of Vpu CTD α-helix II domain on viral release enhancement and down-modulation of BST-2 and CD4 from cell surface. In addition, as serine residues in either Vpu amino acid positions 61 or 64 have been shown to regulate Vpu intracellular half-life, which in turn could influence the magnitude of viral release, we also studied the impact of these residues in the BF Vpu functions, since S61 and S64 are infrequently found among BF recombinant Vpu variants. Our results showed that interchange of Vpu α-helix II between subtypes (B→F) directly correlated with enhancement of viral release and, to a lesser extent, with changes in the capacity to down-modulate BST-2 and CD4 of the resulting chimera. No statistical differences on viral release and BST-2 down-modulation were observed between Vpu BF and VpuBF E61S. On the other hand, VpuBF A64S showed a slightly reduced capacity to enhance viral production but was modestly more efficient than VpuBF in down-modulating BST-2. In summary, our observations clearly evidence that α-helix II is actively involved in Vpu viral release-promoting activity, and that intersubtype recombination between subtypes B and F1 originated a protein variant with higher potential to boost the spread of the recombinant strain that harbors it. Fil: de Candia, Cristian Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas en Retrovirus y Sida; Argentina; Fil: Espada, Constanza Eleonora. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Microbiologia. Centro Nacional de Referencia del Sida; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas en Retrovirus y Sida; Argentina; Fil: Duette, Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas en Retrovirus y Sida; Argentina; Universidad de Buenos Aires. Facultad de Medicina. Departamento de Microbiología; Argentina; Fil: Salomon, Horacio Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas en Retrovirus y Sida; Argentina; Universidad de Buenos Aires. Facultad de Medicina. Departamento de Microbiología; Argentina; Fil: Carobene, Mauricio. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Microbiologia. Centro Nacional de Referencia del Sida; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas en Retrovirus y Sida; Argentina; |
description |
We previously reported a naturally occurring BF intersubtype recombinant Vpu variant with augmented capacity to enhance viral replication. Structural analysis of this variant revealed that its transmembrane domain (TMD) and α-helix I in the cytoplasmic domain (CTD) corresponded to subtype B, whereas CTD α-helix II corresponded to subtype F1. This work was aimed at evaluating the role of Vpu CTD α-helix II domain on viral release enhancement and down-modulation of BST-2 and CD4 from cell surface. In addition, as serine residues in either Vpu amino acid positions 61 or 64 have been shown to regulate Vpu intracellular half-life, which in turn could influence the magnitude of viral release, we also studied the impact of these residues in the BF Vpu functions, since S61 and S64 are infrequently found among BF recombinant Vpu variants. Our results showed that interchange of Vpu α-helix II between subtypes (B→F) directly correlated with enhancement of viral release and, to a lesser extent, with changes in the capacity to down-modulate BST-2 and CD4 of the resulting chimera. No statistical differences on viral release and BST-2 down-modulation were observed between Vpu BF and VpuBF E61S. On the other hand, VpuBF A64S showed a slightly reduced capacity to enhance viral production but was modestly more efficient than VpuBF in down-modulating BST-2. In summary, our observations clearly evidence that α-helix II is actively involved in Vpu viral release-promoting activity, and that intersubtype recombination between subtypes B and F1 originated a protein variant with higher potential to boost the spread of the recombinant strain that harbors it. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-04 |
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/11336/1808 de Candia, Cristian Ariel; Espada, Constanza Eleonora; Duette, Gabriel; Salomon, Horacio Eduardo; Carobene, Mauricio; HIV-1 BF intersubtype recombinant Vpu second alpha helix plays an important role in the viral release and BST-2 degradation; Society for General Microbiology; Journal of General Virology; 94; 4-2013; 758-766 0022-1317 |
url |
http://hdl.handle.net/11336/1808 |
identifier_str_mv |
de Candia, Cristian Ariel; Espada, Constanza Eleonora; Duette, Gabriel; Salomon, Horacio Eduardo; Carobene, Mauricio; HIV-1 BF intersubtype recombinant Vpu second alpha helix plays an important role in the viral release and BST-2 degradation; Society for General Microbiology; Journal of General Virology; 94; 4-2013; 758-766 0022-1317 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/doi:10.1099/vir.0.047746-0 info:eu-repo/semantics/altIdentifier/url/http://jgv.sgmjournals.org/content/journal/jgv/10.1099/vir.0.047746-0?crawler=true&mimetype=application/pdf |
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 |
Society for General Microbiology |
publisher.none.fl_str_mv |
Society for General Microbiology |
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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1844614466894823424 |
score |
13.070432 |