Glutamate uptake in Lactobacillus delbrueckii subsp. bulgaricus CNRZ 208 and its enhancement by a combination of Mn2+ and Mg2+

Autores
Savoy, Graciela; Foucaud-Scheunemann, Catherine; Ferchichi, Mohamed; Hemme, Denis
Año de publicación
2002
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Aims: To demonstrate the mechanism of glutamate uptake in the dairy strain Lactobacillus delbrueckii subsp. bulgaricus CNRZ 208, and to characterize key aspects of the system. Methods and Results: Glutamate uptake proceeded via an active transport system requiring an exogenous source of energy. The system also transported aspartate and glutamine. It was unique, with a Kt of 2.8 μmoll-1 and a Vmax of 900 μmol s-1 (g dry weight)-1. The activity was optimal at pH 7.3 and 50°C, was independent of the glutamate charge, and was enhanced by Mn2+ + Mg2+ in combination. Inhibition of the activity by uncouplers and ionophores showed that transport was driven by an ATP-dependent mechanism involving the proton-motive force. This inhibition was partially abolished in the presence of both Mn2+ and Mg2+. Conclusions: We demonstrated for the first time that an active transport system governs the uptake of the essential amino acid glutamate in Lact. delbrueckii subsp. bulgaricus CNRZ 208, the activity of which is enhanced by a combination of Mn2+ and Mg2+. Significance and Impact of the Study: The potential of the findings is discussed with reference to the growth of Lact. delbrueckii subsp. bulgaricus in mixed-strain cultures for the dairy industry.
Fil: Savoy, Graciela. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Microbiología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina
Fil: Foucaud-Scheunemann, Catherine. Unité de Recherches Laitières Et Génétique Appliquée, I; Francia
Fil: Ferchichi, Mohamed. Unité de Recherches Laitières Et Génétique Appliquée, I; Francia
Fil: Hemme, Denis. Unité de Recherches Laitières Et Génétique Appliquée, I; Francia
Materia
Glutamate Uptake
Lactobacillus Delbrueckii Subsp. Bulgaricus
Amino Acid Transport
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/57275
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/57275
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Glutamate uptake in Lactobacillus delbrueckii subsp. bulgaricus CNRZ 208 and its enhancement by a combination of Mn2+ and Mg2+Savoy, GracielaFoucaud-Scheunemann, CatherineFerchichi, MohamedHemme, DenisGlutamate UptakeLactobacillus Delbrueckii Subsp. BulgaricusAmino Acid TransportAims: To demonstrate the mechanism of glutamate uptake in the dairy strain Lactobacillus delbrueckii subsp. bulgaricus CNRZ 208, and to characterize key aspects of the system. Methods and Results: Glutamate uptake proceeded via an active transport system requiring an exogenous source of energy. The system also transported aspartate and glutamine. It was unique, with a Kt of 2.8 μmoll-1 and a Vmax of 900 μmol s-1 (g dry weight)-1. The activity was optimal at pH 7.3 and 50°C, was independent of the glutamate charge, and was enhanced by Mn2+ + Mg2+ in combination. Inhibition of the activity by uncouplers and ionophores showed that transport was driven by an ATP-dependent mechanism involving the proton-motive force. This inhibition was partially abolished in the presence of both Mn2+ and Mg2+. Conclusions: We demonstrated for the first time that an active transport system governs the uptake of the essential amino acid glutamate in Lact. delbrueckii subsp. bulgaricus CNRZ 208, the activity of which is enhanced by a combination of Mn2+ and Mg2+. Significance and Impact of the Study: The potential of the findings is discussed with reference to the growth of Lact. delbrueckii subsp. bulgaricus in mixed-strain cultures for the dairy industry.Fil: Savoy, Graciela. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Microbiología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; ArgentinaFil: Foucaud-Scheunemann, Catherine. Unité de Recherches Laitières Et Génétique Appliquée, I; FranciaFil: Ferchichi, Mohamed. Unité de Recherches Laitières Et Génétique Appliquée, I; FranciaFil: Hemme, Denis. Unité de Recherches Laitières Et Génétique Appliquée, I; FranciaWiley Blackwell Publishing, Inc2002-10-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/57275Savoy, Graciela; Foucaud-Scheunemann, Catherine; Ferchichi, Mohamed; Hemme, Denis; Glutamate uptake in Lactobacillus delbrueckii subsp. bulgaricus CNRZ 208 and its enhancement by a combination of Mn2+ and Mg2+; Wiley Blackwell Publishing, Inc; Letters in Applied Microbiology; 35; 5; 17-10-2002; 428-4320266-82541472-765XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1046/j.1472-765X.2002.01208.xinfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1046/j.1472-765X.2002.01208.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:56:12Zoai:ri.conicet.gov.ar:11336/57275instacron: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 09:56:12.371CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Glutamate uptake in Lactobacillus delbrueckii subsp. bulgaricus CNRZ 208 and its enhancement by a combination of Mn2+ and Mg2+
title Glutamate uptake in Lactobacillus delbrueckii subsp. bulgaricus CNRZ 208 and its enhancement by a combination of Mn2+ and Mg2+
spellingShingle Glutamate uptake in Lactobacillus delbrueckii subsp. bulgaricus CNRZ 208 and its enhancement by a combination of Mn2+ and Mg2+
Savoy, Graciela
Glutamate Uptake
Lactobacillus Delbrueckii Subsp. Bulgaricus
Amino Acid Transport
title_short Glutamate uptake in Lactobacillus delbrueckii subsp. bulgaricus CNRZ 208 and its enhancement by a combination of Mn2+ and Mg2+
title_full Glutamate uptake in Lactobacillus delbrueckii subsp. bulgaricus CNRZ 208 and its enhancement by a combination of Mn2+ and Mg2+
title_fullStr Glutamate uptake in Lactobacillus delbrueckii subsp. bulgaricus CNRZ 208 and its enhancement by a combination of Mn2+ and Mg2+
title_full_unstemmed Glutamate uptake in Lactobacillus delbrueckii subsp. bulgaricus CNRZ 208 and its enhancement by a combination of Mn2+ and Mg2+
title_sort Glutamate uptake in Lactobacillus delbrueckii subsp. bulgaricus CNRZ 208 and its enhancement by a combination of Mn2+ and Mg2+
dc.creator.none.fl_str_mv Savoy, Graciela
Foucaud-Scheunemann, Catherine
Ferchichi, Mohamed
Hemme, Denis
author Savoy, Graciela
author_facet Savoy, Graciela
Foucaud-Scheunemann, Catherine
Ferchichi, Mohamed
Hemme, Denis
author_role author
author2 Foucaud-Scheunemann, Catherine
Ferchichi, Mohamed
Hemme, Denis
author2_role author
author
author
dc.subject.none.fl_str_mv Glutamate Uptake
Lactobacillus Delbrueckii Subsp. Bulgaricus
Amino Acid Transport
topic Glutamate Uptake
Lactobacillus Delbrueckii Subsp. Bulgaricus
Amino Acid Transport
dc.description.none.fl_txt_mv Aims: To demonstrate the mechanism of glutamate uptake in the dairy strain Lactobacillus delbrueckii subsp. bulgaricus CNRZ 208, and to characterize key aspects of the system. Methods and Results: Glutamate uptake proceeded via an active transport system requiring an exogenous source of energy. The system also transported aspartate and glutamine. It was unique, with a Kt of 2.8 μmoll-1 and a Vmax of 900 μmol s-1 (g dry weight)-1. The activity was optimal at pH 7.3 and 50°C, was independent of the glutamate charge, and was enhanced by Mn2+ + Mg2+ in combination. Inhibition of the activity by uncouplers and ionophores showed that transport was driven by an ATP-dependent mechanism involving the proton-motive force. This inhibition was partially abolished in the presence of both Mn2+ and Mg2+. Conclusions: We demonstrated for the first time that an active transport system governs the uptake of the essential amino acid glutamate in Lact. delbrueckii subsp. bulgaricus CNRZ 208, the activity of which is enhanced by a combination of Mn2+ and Mg2+. Significance and Impact of the Study: The potential of the findings is discussed with reference to the growth of Lact. delbrueckii subsp. bulgaricus in mixed-strain cultures for the dairy industry.
Fil: Savoy, Graciela. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Microbiología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina
Fil: Foucaud-Scheunemann, Catherine. Unité de Recherches Laitières Et Génétique Appliquée, I; Francia
Fil: Ferchichi, Mohamed. Unité de Recherches Laitières Et Génétique Appliquée, I; Francia
Fil: Hemme, Denis. Unité de Recherches Laitières Et Génétique Appliquée, I; Francia
description Aims: To demonstrate the mechanism of glutamate uptake in the dairy strain Lactobacillus delbrueckii subsp. bulgaricus CNRZ 208, and to characterize key aspects of the system. Methods and Results: Glutamate uptake proceeded via an active transport system requiring an exogenous source of energy. The system also transported aspartate and glutamine. It was unique, with a Kt of 2.8 μmoll-1 and a Vmax of 900 μmol s-1 (g dry weight)-1. The activity was optimal at pH 7.3 and 50°C, was independent of the glutamate charge, and was enhanced by Mn2+ + Mg2+ in combination. Inhibition of the activity by uncouplers and ionophores showed that transport was driven by an ATP-dependent mechanism involving the proton-motive force. This inhibition was partially abolished in the presence of both Mn2+ and Mg2+. Conclusions: We demonstrated for the first time that an active transport system governs the uptake of the essential amino acid glutamate in Lact. delbrueckii subsp. bulgaricus CNRZ 208, the activity of which is enhanced by a combination of Mn2+ and Mg2+. Significance and Impact of the Study: The potential of the findings is discussed with reference to the growth of Lact. delbrueckii subsp. bulgaricus in mixed-strain cultures for the dairy industry.
publishDate 2002
dc.date.none.fl_str_mv 2002-10-17
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/11336/57275
Savoy, Graciela; Foucaud-Scheunemann, Catherine; Ferchichi, Mohamed; Hemme, Denis; Glutamate uptake in Lactobacillus delbrueckii subsp. bulgaricus CNRZ 208 and its enhancement by a combination of Mn2+ and Mg2+; Wiley Blackwell Publishing, Inc; Letters in Applied Microbiology; 35; 5; 17-10-2002; 428-432
0266-8254
1472-765X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/57275
identifier_str_mv Savoy, Graciela; Foucaud-Scheunemann, Catherine; Ferchichi, Mohamed; Hemme, Denis; Glutamate uptake in Lactobacillus delbrueckii subsp. bulgaricus CNRZ 208 and its enhancement by a combination of Mn2+ and Mg2+; Wiley Blackwell Publishing, Inc; Letters in Applied Microbiology; 35; 5; 17-10-2002; 428-432
0266-8254
1472-765X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1046/j.1472-765X.2002.01208.x
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1046/j.1472-765X.2002.01208.x
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 Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
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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score 13.13397

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