Mg2+ homeostasis and transport in cyanobacteria - at the crossroads of bacterial and chloroplast Mg2+ import
- Publication type:
- Journal article
- Metadata:
-
- Abstract
- <jats:title>Abstract</jats:title> <jats:p>Magnesium cation (Mg<jats:sup>2+</jats:sup>) is the most abundant divalent cation in living cells, where it is required for various intracellular functions. In chloroplasts and cyanobacteria, established photosynthetic model systems, Mg<jats:sup>2+</jats:sup> is the central ion in chlorophylls, and Mg<jats:sup>2+</jats:sup> flux across the thylakoid membrane is required for counterbalancing the light-induced generation of a ΔpH across the thylakoid membrane. Yet, not much is known about Mg<jats:sup>2+</jats:sup> homoeostasis, transport and distribution within cyanobacteria. However, Mg<jats:sup>2+</jats:sup> transport across membranes has been studied in non-photosynthetic bacteria, and first observations and findings are reported for chloroplasts. Cyanobacterial cytoplasmic membranes appear to contain the well-characterized Mg<jats:sup>2+</jats:sup> channels CorA and/or MgtE, which both facilitate transmembrane Mg<jats:sup>2+</jats:sup> flux down the electrochemical gradient. Both Mg<jats:sup>2+</jats:sup> channels are typical for non-photosynthetic bacteria. Furthermore, Mg<jats:sup>2+</jats:sup> transporters of the MgtA/B family are also present in the cytoplasmic membrane to mediate active Mg<jats:sup>2+</jats:sup> import into the bacterial cell. While the cytoplasmic membrane of cyanobacteria resembles a ‘classical’ bacterial membrane, essentially nothing is known about Mg<jats:sup>2+</jats:sup> channels and/or transporters in thylakoid membranes of cyanobacteria or chloroplasts. As discussed here, at least one Mg<jats:sup>2+</jats:sup> channelling protein must be localized within thylakoid membranes. Thus, either one of the ‘typical’ bacterial Mg<jats:sup>2+</jats:sup> channels has a dual localization in the cytoplasmic plus the thylakoid membrane, or another, yet unidentified channel is present in cyanobacterial thylakoid membranes.</jats:p>
- Autoren
- Anne-Christin Pohland
- Dirk Schneider
- DOI
- 10.1515/hsz-2018-0476
- eISSN
- 1437-4315
- ISSN
- 1431-6730
- Ausgabe der Veröffentlichung
- 10
- Zeitschrift
- Biological Chemistry
- Sprache
- en
- Online publication date
- 2019
- Paginierung
- 1289 - 1301
- Datum der Veröffentlichung
- 2019
- Status
- Published
- Herausgeber
- Walter de Gruyter GmbH
- Herausgeber URL
- http://dx.doi.org/10.1515/hsz-2018-0476
- Datum der Datenerfassung
- 2023
- Titel
- Mg<sup>2+</sup> homeostasis and transport in cyanobacteria – at the crossroads of bacterial and chloroplast Mg<sup>2+</sup> import
- Ausgabe der Zeitschrift
- 400
Data source: Crossref
- Other metadata sources:
-
- Abstract
- Magnesium cation (Mg2+) is the most abundant divalent cation in living cells, where it is required for various intracellular functions. In chloroplasts and cyanobacteria, established photosynthetic model systems, Mg2+ is the central ion in chlorophylls, and Mg2+ flux across the thylakoid membrane is required for counterbalancing the light-induced generation of a ΔpH across the thylakoid membrane. Yet, not much is known about Mg2+ homoeostasis, transport and distribution within cyanobacteria. However, Mg2+ transport across membranes has been studied in non-photosynthetic bacteria, and first observations and findings are reported for chloroplasts. Cyanobacterial cytoplasmic membranes appear to contain the well-characterized Mg2+ channels CorA and/or MgtE, which both facilitate transmembrane Mg2+ flux down the electrochemical gradient. Both Mg2+ channels are typical for non-photosynthetic bacteria. Furthermore, Mg2+ transporters of the MgtA/B family are also present in the cytoplasmic membrane to mediate active Mg2+ import into the bacterial cell. While the cytoplasmic membrane of cyanobacteria resembles a 'classical' bacterial membrane, essentially nothing is known about Mg2+ channels and/or transporters in thylakoid membranes of cyanobacteria or chloroplasts. As discussed here, at least one Mg2+ channelling protein must be localized within thylakoid membranes. Thus, either one of the 'typical' bacterial Mg2+ channels has a dual localization in the cytoplasmic plus the thylakoid membrane, or another, yet unidentified channel is present in cyanobacterial thylakoid membranes.
- Addresses
- Institut für Pharmazie und Biochemie, Johannes-Gutenberg-Universität Mainz, Johann-Joachim-Becher-Weg 30, D-55128 Mainz, Germany.
- Autoren
- Anne-Christin Pohland
- Dirk Schneider
- DOI
- 10.1515/hsz-2018-0476
- eISSN
- 1437-4315
- Externe Identifier
- PubMed Identifier: 30913030
- Open access
- false
- ISSN
- 1431-6730
- Ausgabe der Veröffentlichung
- 10
- Zeitschrift
- Biological chemistry
- Schlüsselwörter
- Chloroplasts
- Bacteria
- Cyanobacteria
- Magnesium
- Membrane Transport Proteins
- Ion Transport
- Homeostasis
- Sprache
- eng
- Medium
- Paginierung
- 1289 - 1301
- Datum der Veröffentlichung
- 2019
- Status
- Published
- Datum der Datenerfassung
- 2019
- Titel
- Mg2+ homeostasis and transport in cyanobacteria - at the crossroads of bacterial and chloroplast Mg2+ import.
- Sub types
- Review
- Journal Article
- Ausgabe der Zeitschrift
- 400
Data source: Europe PubMed Central
- Abstract
- Magnesium cation (Mg2+) is the most abundant divalent cation in living cells, where it is required for various intracellular functions. In chloroplasts and cyanobacteria, established photosynthetic model systems, Mg2+ is the central ion in chlorophylls, and Mg2+ flux across the thylakoid membrane is required for counterbalancing the light-induced generation of a ΔpH across the thylakoid membrane. Yet, not much is known about Mg2+ homoeostasis, transport and distribution within cyanobacteria. However, Mg2+ transport across membranes has been studied in non-photosynthetic bacteria, and first observations and findings are reported for chloroplasts. Cyanobacterial cytoplasmic membranes appear to contain the well-characterized Mg2+ channels CorA and/or MgtE, which both facilitate transmembrane Mg2+ flux down the electrochemical gradient. Both Mg2+ channels are typical for non-photosynthetic bacteria. Furthermore, Mg2+ transporters of the MgtA/B family are also present in the cytoplasmic membrane to mediate active Mg2+ import into the bacterial cell. While the cytoplasmic membrane of cyanobacteria resembles a 'classical' bacterial membrane, essentially nothing is known about Mg2+ channels and/or transporters in thylakoid membranes of cyanobacteria or chloroplasts. As discussed here, at least one Mg2+ channelling protein must be localized within thylakoid membranes. Thus, either one of the 'typical' bacterial Mg2+ channels has a dual localization in the cytoplasmic plus the thylakoid membrane, or another, yet unidentified channel is present in cyanobacterial thylakoid membranes.
- Date of acceptance
- 2019
- Autoren
- Anne-Christin Pohland
- Dirk Schneider
- Autoren-URL
- https://www.ncbi.nlm.nih.gov/pubmed/30913030
- DOI
- 10.1515/hsz-2018-0476
- eISSN
- 1437-4315
- Ausgabe der Veröffentlichung
- 10
- Zeitschrift
- Biol Chem
- Schlüsselwörter
- CorA
- MgtE
- Synechocystis
- channel
- membrane transport
- transporter
- Bacteria
- Chloroplasts
- Cyanobacteria
- Homeostasis
- Ion Transport
- Magnesium
- Membrane Transport Proteins
- Sprache
- eng
- Country
- Germany
- Paginierung
- 1289 - 1301
- PII
- /j/bchm.just-accepted/hsz-2018-0476/hsz-2018-0476.xml
- Datum der Veröffentlichung
- 2019
- Status
- Published
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2020
- Titel
- Mg2+ homeostasis and transport in cyanobacteria - at the crossroads of bacterial and chloroplast Mg2+ import.
- Sub types
- Journal Article
- Review
- Ausgabe der Zeitschrift
- 400
Data source: PubMed
- Abstract
- <jats:title>Abstract</jats:title> <jats:p>Magnesium cation (Mg<jats:sup>2+</jats:sup>) is the most abundant divalent cation in living cells, where it is required for various intracellular functions. In chloroplasts and cyanobacteria, established photosynthetic model systems, Mg<jats:sup>2+</jats:sup> is the central ion in chlorophylls, and Mg<jats:sup>2+</jats:sup> flux across the thylakoid membrane is required for counterbalancing the light-induced generation of a ΔpH across the thylakoid membrane. Yet, not much is known about Mg<jats:sup>2+</jats:sup> homoeostasis, transport and distribution within cyanobacteria. However, Mg<jats:sup>2+</jats:sup> transport across membranes has been studied in non-photosynthetic bacteria, and first observations and findings are reported for chloroplasts. Cyanobacterial cytoplasmic membranes appear to contain the well-characterized Mg<jats:sup>2+</jats:sup> channels CorA and/or MgtE, which both facilitate transmembrane Mg<jats:sup>2+</jats:sup> flux down the electrochemical gradient. Both Mg<jats:sup>2+</jats:sup> channels are typical for non-photosynthetic bacteria. Furthermore, Mg<jats:sup>2+</jats:sup> transporters of the MgtA/B family are also present in the cytoplasmic membrane to mediate active Mg<jats:sup>2+</jats:sup> import into the bacterial cell. While the cytoplasmic membrane of cyanobacteria resembles a ‘classical’ bacterial membrane, essentially nothing is known about Mg<jats:sup>2+</jats:sup> channels and/or transporters in thylakoid membranes of cyanobacteria or chloroplasts. As discussed here, at least one Mg<jats:sup>2+</jats:sup> channelling protein must be localized within thylakoid membranes. Thus, either one of the ‘typical’ bacterial Mg<jats:sup>2+</jats:sup> channels has a dual localization in the cytoplasmic plus the thylakoid membrane, or another, yet unidentified channel is present in cyanobacterial thylakoid membranes.</jats:p>
- Autoren
- Anne-Christin Pohland
- Dirk Schneider
- DOI
- 10.1515/hsz-2018-0476
- eISSN
- 1437-4315
- ISSN
- 1431-6730
- Ausgabe der Veröffentlichung
- 10
- Zeitschrift
- Biological Chemistry
- Sprache
- en
- Online publication date
- 2019
- Paginierung
- 1289 - 1301
- Datum der Veröffentlichung
- 2019
- Status
- Published
- Herausgeber
- Walter de Gruyter GmbH
- Herausgeber URL
- http://dx.doi.org/10.1515/hsz-2018-0476
- Datum der Datenerfassung
- 2024
- Titel
- Mg2+ homeostasis and transport in cyanobacteria - at the crossroads of bacterial and chloroplast Mg2+ import
- Ausgabe der Zeitschrift
- 400
Data source: Manual
- Beziehungen:
- Property of