Characterization of the Δ7 Mutant of <named-content content-type="genus-species">Cupriavidus metallidurans</named-content> with Deletions of Seven Secondary Metal Uptake Systems

ABSTRACT Central to the ability of Cupriavidus metallidurans to maintain its metal homoeostasis is the metal transportome, composed of uptake and efflux systems. Seven secondary metal import systems, ZupT, PitA, CorA1, CorA2, CorA3, ZntB, and HoxN, interact and are at the core of the metal uptake tr...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Cornelia Große, Martin Herzberg, Marcel Schüttau, Nicole Wiesemann, Gerd Hause, Dietrich H. Nies
Formato:	article
Lenguaje:	EN
Publicado:	American Society for Microbiology 2016
Materias:	Cupriavidus Ralstonia zinc cadmium cobalt Microbiology QR1-502
Acceso en línea:	https://doaj.org/article/38fa979b6e3940e7ae7b514dde050f69
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:38fa979b6e3940e7ae7b514dde050f69
record_format	dspace
spelling	oai:doaj.org-article:38fa979b6e3940e7ae7b514dde050f692021-12-02T19:48:49ZCharacterization of the Δ7 Mutant of <named-content content-type="genus-species">Cupriavidus metallidurans</named-content> with Deletions of Seven Secondary Metal Uptake Systems10.1128/mSystems.00004-162379-5077https://doaj.org/article/38fa979b6e3940e7ae7b514dde050f692016-02-01T00:00:00Zhttps://journals.asm.org/doi/10.1128/mSystems.00004-16https://doaj.org/toc/2379-5077ABSTRACT Central to the ability of Cupriavidus metallidurans to maintain its metal homoeostasis is the metal transportome, composed of uptake and efflux systems. Seven secondary metal import systems, ZupT, PitA, CorA1, CorA2, CorA3, ZntB, and HoxN, interact and are at the core of the metal uptake transportome. The 7-fold deletion mutant Δ7 (ΔzupT ΔpitA ΔcorA1ΔcorA2ΔcorA3ΔzntB ΔhoxN) of parent strain AE104 is still able to maintain its cellular metal content, although at the cost of reduced fitness (M. Herzberg, L. Bauer, A. Kirsten, and D. H. Nies, Metallomics, in press, http://dx.doi.org/10.1039/C5MT00295H ). Strain Δ7 does not express genes for backup importers, and so Δ7 should use metal uptake systems also produced in the AE104 parent cells. These systems should be activated in Δ7 by posttranscriptional regulatory processes. The decreased fitness of Δ7 correlated with a zinc-dependent downregulation of the overall metabolic backbone of the cells even at nontoxic external zinc concentrations. Responsible for this decreased fitness of Δ7 was a negative interference of the activity of two P-type ATPases, MgtA and MgtB, which, on the other hand, kept Δ7 at a fitness level higher than that of the Δ9 (Δ7 ΔmgtA::kan ΔmgtB) mutant strain. This revealed a complicated interplay of the metal uptake transportome of C. metallidurans, which is composed of the seven secondary uptake systems, MgtA, MgtB, and yet-unknown components, with cytoplasmic transition metal pools and posttranscriptional regulatory processes. IMPORTANCE Bacteria, including pathogenic strains, need to make use of the metal composition and speciation of their environment to fulfill the requirement of the cytoplasmic metal content and composition. This task is performed by the bacterial metal transportome, composed of uptake and efflux systems. Seven interacting secondary metal uptake systems are at the core of the metal transportome in C. metallidurans. This publication verifies that posttranscriptional events are responsible for activation of even more, yet-unknown, metal import systems in the 7-fold deletion mutant Δ7. Two P-type ATPases were identified as new members of the metal uptake transportome. This publication demonstrates the complexity of the metal transportome and the regulatory processes involved.Cornelia GroßeMartin HerzbergMarcel SchüttauNicole WiesemannGerd HauseDietrich H. NiesAmerican Society for MicrobiologyarticleCupriavidusRalstoniazinccadmiumcobaltMicrobiologyQR1-502ENmSystems, Vol 1, Iss 1 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	Cupriavidus Ralstonia zinc cadmium cobalt Microbiology QR1-502
spellingShingle	Cupriavidus Ralstonia zinc cadmium cobalt Microbiology QR1-502 Cornelia Große Martin Herzberg Marcel Schüttau Nicole Wiesemann Gerd Hause Dietrich H. Nies Characterization of the Δ7 Mutant of <named-content content-type="genus-species">Cupriavidus metallidurans</named-content> with Deletions of Seven Secondary Metal Uptake Systems
description	ABSTRACT Central to the ability of Cupriavidus metallidurans to maintain its metal homoeostasis is the metal transportome, composed of uptake and efflux systems. Seven secondary metal import systems, ZupT, PitA, CorA1, CorA2, CorA3, ZntB, and HoxN, interact and are at the core of the metal uptake transportome. The 7-fold deletion mutant Δ7 (ΔzupT ΔpitA ΔcorA1ΔcorA2ΔcorA3ΔzntB ΔhoxN) of parent strain AE104 is still able to maintain its cellular metal content, although at the cost of reduced fitness (M. Herzberg, L. Bauer, A. Kirsten, and D. H. Nies, Metallomics, in press, http://dx.doi.org/10.1039/C5MT00295H ). Strain Δ7 does not express genes for backup importers, and so Δ7 should use metal uptake systems also produced in the AE104 parent cells. These systems should be activated in Δ7 by posttranscriptional regulatory processes. The decreased fitness of Δ7 correlated with a zinc-dependent downregulation of the overall metabolic backbone of the cells even at nontoxic external zinc concentrations. Responsible for this decreased fitness of Δ7 was a negative interference of the activity of two P-type ATPases, MgtA and MgtB, which, on the other hand, kept Δ7 at a fitness level higher than that of the Δ9 (Δ7 ΔmgtA::kan ΔmgtB) mutant strain. This revealed a complicated interplay of the metal uptake transportome of C. metallidurans, which is composed of the seven secondary uptake systems, MgtA, MgtB, and yet-unknown components, with cytoplasmic transition metal pools and posttranscriptional regulatory processes. IMPORTANCE Bacteria, including pathogenic strains, need to make use of the metal composition and speciation of their environment to fulfill the requirement of the cytoplasmic metal content and composition. This task is performed by the bacterial metal transportome, composed of uptake and efflux systems. Seven interacting secondary metal uptake systems are at the core of the metal transportome in C. metallidurans. This publication verifies that posttranscriptional events are responsible for activation of even more, yet-unknown, metal import systems in the 7-fold deletion mutant Δ7. Two P-type ATPases were identified as new members of the metal uptake transportome. This publication demonstrates the complexity of the metal transportome and the regulatory processes involved.
format	article
author	Cornelia Große Martin Herzberg Marcel Schüttau Nicole Wiesemann Gerd Hause Dietrich H. Nies
author_facet	Cornelia Große Martin Herzberg Marcel Schüttau Nicole Wiesemann Gerd Hause Dietrich H. Nies
author_sort	Cornelia Große
title	Characterization of the Δ7 Mutant of <named-content content-type="genus-species">Cupriavidus metallidurans</named-content> with Deletions of Seven Secondary Metal Uptake Systems
title_short	Characterization of the Δ7 Mutant of <named-content content-type="genus-species">Cupriavidus metallidurans</named-content> with Deletions of Seven Secondary Metal Uptake Systems
title_full	Characterization of the Δ7 Mutant of <named-content content-type="genus-species">Cupriavidus metallidurans</named-content> with Deletions of Seven Secondary Metal Uptake Systems
title_fullStr	Characterization of the Δ7 Mutant of <named-content content-type="genus-species">Cupriavidus metallidurans</named-content> with Deletions of Seven Secondary Metal Uptake Systems
title_full_unstemmed	Characterization of the Δ7 Mutant of <named-content content-type="genus-species">Cupriavidus metallidurans</named-content> with Deletions of Seven Secondary Metal Uptake Systems
title_sort	characterization of the δ7 mutant of <named-content content-type="genus-species">cupriavidus metallidurans</named-content> with deletions of seven secondary metal uptake systems
publisher	American Society for Microbiology
publishDate	2016
url	https://doaj.org/article/38fa979b6e3940e7ae7b514dde050f69
work_keys_str_mv	AT corneliagroße characterizationofthed7mutantofnamedcontentcontenttypegenusspeciescupriavidusmetalliduransnamedcontentwithdeletionsofsevensecondarymetaluptakesystems AT martinherzberg characterizationofthed7mutantofnamedcontentcontenttypegenusspeciescupriavidusmetalliduransnamedcontentwithdeletionsofsevensecondarymetaluptakesystems AT marcelschuttau characterizationofthed7mutantofnamedcontentcontenttypegenusspeciescupriavidusmetalliduransnamedcontentwithdeletionsofsevensecondarymetaluptakesystems AT nicolewiesemann characterizationofthed7mutantofnamedcontentcontenttypegenusspeciescupriavidusmetalliduransnamedcontentwithdeletionsofsevensecondarymetaluptakesystems AT gerdhause characterizationofthed7mutantofnamedcontentcontenttypegenusspeciescupriavidusmetalliduransnamedcontentwithdeletionsofsevensecondarymetaluptakesystems AT dietrichhnies characterizationofthed7mutantofnamedcontentcontenttypegenusspeciescupriavidusmetalliduransnamedcontentwithdeletionsofsevensecondarymetaluptakesystems
_version_	1718375953405575168

Characterization of the Δ7 Mutant of <named-content content-type="genus-species">Cupriavidus metallidurans</named-content> with Deletions of Seven Secondary Metal Uptake Systems

Ejemplares similares