Primary sodium plasma membrane ATPases in salt-tolerant algae : facts and fictions
For thermodynamic reasons algae growing in media of both high salinity and high alkalinity require active export of sodium. However, experimental evidence for an active Na+-dependent cycle was scarce until recently, in contrast to the situation in marine bacteria (including cyanobacteria), fungi and...
| Veröffentlicht in: | Journal of experimental botany. - 1985. - 51(2000), 348 vom: 17. Juli, Seite 1171-8 |
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| 1. Verfasser: | |
| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2000
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| Zugriff auf das übergeordnete Werk: | Journal of experimental botany |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't Review Membrane Proteins Adenosine Triphosphate 8L70Q75FXE Sodium-Potassium-Exchanging ATPase EC 7.2.2.13 |
| Zusammenfassung: | For thermodynamic reasons algae growing in media of both high salinity and high alkalinity require active export of sodium. However, experimental evidence for an active Na+-dependent cycle was scarce until recently, in contrast to the situation in marine bacteria (including cyanobacteria), fungi and animals. However, a review of literature reveals that some progress has been made in this respect, recently: data demonstrate that at least in two marine algae, Tetraselmis (Platymonas) viridis and Heterosigma akashiwo (syn. Olisthodiscus luteus), active Na+-export is carried out by means of a plasma membrane localized Na+-pump (apparent molecular mass 100-140 kDa). Biochemical characteristics of this vanadate-sensitive, but ouabain-resistant primary P-type Na+-ATPase are described and compared with the corresponding properties of Na+-ATPase from prokaryotes and animals. Alternative mechanisms for Na+-pumping are discussed |
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| Beschreibung: | Date Completed 06.09.2000 Date Revised 10.12.2019 published: Print Citation Status MEDLINE |
| ISSN: | 1460-2431 |