Purification and Characterization of a Glutathione Reductase from Phaeodactylum tricornutum
- Autores
- Arias, Diego Gustavo; Márquez, Vanina Elizabet; Beccaria, Alejandro José; Guerrero, Sergio Adrian; Iglesias, Alberto Alvaro
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Glutathione reductase (E.C.1.8.1.7) was purified from Phaeodactylum tricornutum cells grown axenically in an autotrophic medium. The overall procedure started with preparation of the cell extract and addition of ammonium sulfate to 20% saturation, followed by anion exchange and affinity interaction chromatography (Blue-A- and 2',5'-ADP-Sepharose). Complete purification required native polyacrylamide gel electrophoresis as the final step. The enzyme was purified to homogeneity and functionally characterized. Its native molecular mass was estimated to be 118 kDa; which corresponds to a dimer. The enzyme exhibited a specific activity of 190 U mg-1 with an optimal activity at pH 8.0 and 32 °C. We determined Km values of 14 μM and 60 μM for NADPH and oxidized glutathione, respectively. Products inhibited the enzyme according to a hybrid ping-pong reaction mechanism. After MALDI-TOF analysis, the purified enzyme was unambiguously identified as one of the two proteins annotated as glutathione reductases in the genome of the diatom. The properties of the enzyme help to understand redox metabolic scenarios in P. tricornutum.
Fil: Arias, Diego Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina
Fil: Márquez, Vanina Elizabet. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina
Fil: Beccaria, Alejandro José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina
Fil: Guerrero, Sergio Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina
Fil: Iglesias, Alberto Alvaro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina - Materia
-
GLUTATHIONE
GLUTATHIONE REDUCTASE
PHAEODACTYLUM TRICORNUTUM
REDOX METABOLISM - 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:11336/84784
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Purification and Characterization of a Glutathione Reductase from Phaeodactylum tricornutumArias, Diego GustavoMárquez, Vanina ElizabetBeccaria, Alejandro JoséGuerrero, Sergio AdrianIglesias, Alberto AlvaroGLUTATHIONEGLUTATHIONE REDUCTASEPHAEODACTYLUM TRICORNUTUMREDOX METABOLISMhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Glutathione reductase (E.C.1.8.1.7) was purified from Phaeodactylum tricornutum cells grown axenically in an autotrophic medium. The overall procedure started with preparation of the cell extract and addition of ammonium sulfate to 20% saturation, followed by anion exchange and affinity interaction chromatography (Blue-A- and 2',5'-ADP-Sepharose). Complete purification required native polyacrylamide gel electrophoresis as the final step. The enzyme was purified to homogeneity and functionally characterized. Its native molecular mass was estimated to be 118 kDa; which corresponds to a dimer. The enzyme exhibited a specific activity of 190 U mg-1 with an optimal activity at pH 8.0 and 32 °C. We determined Km values of 14 μM and 60 μM for NADPH and oxidized glutathione, respectively. Products inhibited the enzyme according to a hybrid ping-pong reaction mechanism. After MALDI-TOF analysis, the purified enzyme was unambiguously identified as one of the two proteins annotated as glutathione reductases in the genome of the diatom. The properties of the enzyme help to understand redox metabolic scenarios in P. tricornutum.Fil: Arias, Diego Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; ArgentinaFil: Márquez, Vanina Elizabet. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; ArgentinaFil: Beccaria, Alejandro José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; ArgentinaFil: Guerrero, Sergio Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; ArgentinaFil: Iglesias, Alberto Alvaro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; ArgentinaElsevier Gmbh2010-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/84784Arias, Diego Gustavo; Márquez, Vanina Elizabet; Beccaria, Alejandro José; Guerrero, Sergio Adrian; Iglesias, Alberto Alvaro; Purification and Characterization of a Glutathione Reductase from Phaeodactylum tricornutum; Elsevier Gmbh; Protist; 161; 1; 1-2010; 91-1011434-4610CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.protis.2009.06.001info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:04:00Zoai:ri.conicet.gov.ar:11336/84784instacron: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:34982025-09-03 10:04:00.419CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Purification and Characterization of a Glutathione Reductase from Phaeodactylum tricornutum |
title |
Purification and Characterization of a Glutathione Reductase from Phaeodactylum tricornutum |
spellingShingle |
Purification and Characterization of a Glutathione Reductase from Phaeodactylum tricornutum Arias, Diego Gustavo GLUTATHIONE GLUTATHIONE REDUCTASE PHAEODACTYLUM TRICORNUTUM REDOX METABOLISM |
title_short |
Purification and Characterization of a Glutathione Reductase from Phaeodactylum tricornutum |
title_full |
Purification and Characterization of a Glutathione Reductase from Phaeodactylum tricornutum |
title_fullStr |
Purification and Characterization of a Glutathione Reductase from Phaeodactylum tricornutum |
title_full_unstemmed |
Purification and Characterization of a Glutathione Reductase from Phaeodactylum tricornutum |
title_sort |
Purification and Characterization of a Glutathione Reductase from Phaeodactylum tricornutum |
dc.creator.none.fl_str_mv |
Arias, Diego Gustavo Márquez, Vanina Elizabet Beccaria, Alejandro José Guerrero, Sergio Adrian Iglesias, Alberto Alvaro |
author |
Arias, Diego Gustavo |
author_facet |
Arias, Diego Gustavo Márquez, Vanina Elizabet Beccaria, Alejandro José Guerrero, Sergio Adrian Iglesias, Alberto Alvaro |
author_role |
author |
author2 |
Márquez, Vanina Elizabet Beccaria, Alejandro José Guerrero, Sergio Adrian Iglesias, Alberto Alvaro |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
GLUTATHIONE GLUTATHIONE REDUCTASE PHAEODACTYLUM TRICORNUTUM REDOX METABOLISM |
topic |
GLUTATHIONE GLUTATHIONE REDUCTASE PHAEODACTYLUM TRICORNUTUM REDOX METABOLISM |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Glutathione reductase (E.C.1.8.1.7) was purified from Phaeodactylum tricornutum cells grown axenically in an autotrophic medium. The overall procedure started with preparation of the cell extract and addition of ammonium sulfate to 20% saturation, followed by anion exchange and affinity interaction chromatography (Blue-A- and 2',5'-ADP-Sepharose). Complete purification required native polyacrylamide gel electrophoresis as the final step. The enzyme was purified to homogeneity and functionally characterized. Its native molecular mass was estimated to be 118 kDa; which corresponds to a dimer. The enzyme exhibited a specific activity of 190 U mg-1 with an optimal activity at pH 8.0 and 32 °C. We determined Km values of 14 μM and 60 μM for NADPH and oxidized glutathione, respectively. Products inhibited the enzyme according to a hybrid ping-pong reaction mechanism. After MALDI-TOF analysis, the purified enzyme was unambiguously identified as one of the two proteins annotated as glutathione reductases in the genome of the diatom. The properties of the enzyme help to understand redox metabolic scenarios in P. tricornutum. Fil: Arias, Diego Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina Fil: Márquez, Vanina Elizabet. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina Fil: Beccaria, Alejandro José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina Fil: Guerrero, Sergio Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina Fil: Iglesias, Alberto Alvaro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina |
description |
Glutathione reductase (E.C.1.8.1.7) was purified from Phaeodactylum tricornutum cells grown axenically in an autotrophic medium. The overall procedure started with preparation of the cell extract and addition of ammonium sulfate to 20% saturation, followed by anion exchange and affinity interaction chromatography (Blue-A- and 2',5'-ADP-Sepharose). Complete purification required native polyacrylamide gel electrophoresis as the final step. The enzyme was purified to homogeneity and functionally characterized. Its native molecular mass was estimated to be 118 kDa; which corresponds to a dimer. The enzyme exhibited a specific activity of 190 U mg-1 with an optimal activity at pH 8.0 and 32 °C. We determined Km values of 14 μM and 60 μM for NADPH and oxidized glutathione, respectively. Products inhibited the enzyme according to a hybrid ping-pong reaction mechanism. After MALDI-TOF analysis, the purified enzyme was unambiguously identified as one of the two proteins annotated as glutathione reductases in the genome of the diatom. The properties of the enzyme help to understand redox metabolic scenarios in P. tricornutum. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-01 |
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/11336/84784 Arias, Diego Gustavo; Márquez, Vanina Elizabet; Beccaria, Alejandro José; Guerrero, Sergio Adrian; Iglesias, Alberto Alvaro; Purification and Characterization of a Glutathione Reductase from Phaeodactylum tricornutum; Elsevier Gmbh; Protist; 161; 1; 1-2010; 91-101 1434-4610 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/84784 |
identifier_str_mv |
Arias, Diego Gustavo; Márquez, Vanina Elizabet; Beccaria, Alejandro José; Guerrero, Sergio Adrian; Iglesias, Alberto Alvaro; Purification and Characterization of a Glutathione Reductase from Phaeodactylum tricornutum; Elsevier Gmbh; Protist; 161; 1; 1-2010; 91-101 1434-4610 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.protis.2009.06.001 |
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 application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Gmbh |
publisher.none.fl_str_mv |
Elsevier Gmbh |
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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1842269831183728640 |
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13.13397 |