Neuhäuser, Benjamin ; Dynowski, Marek ; Ludewig, Uwe (2009):
Channel-like NH3 flux by ammonium transporter AtAMT2.
In: FEBS letters, 583 (17), pp. 2833-8. ISSN 1873-3468,
[Article]
Abstract
Prokaryotes, plants and animals control ammonium fluxes by the regulated expression of ammonium transporters (AMTs) and/or the related Rhesus (Rh) proteins. Plant AMTs were previously reported to mediate electrogenic transport. Functional analysis of AtAMT2 from Arabidopsis in yeast and oocytes suggests that NH(4)(+) is the recruited substrate, but the uncharged form NH(3) is conducted. AtAMT2 partially co-localized with electrogenic AMTs and conducted methylamine with low affinity. This transport mechanism may apply to other plant ammonium transporters and explains the different capacities of AMTs to accumulate ammonium in the plant cell.
| Item Type: | Article |
|---|---|
| Erschienen: | 2009 |
| Creators: | Neuhäuser, Benjamin ; Dynowski, Marek ; Ludewig, Uwe |
| Title: | Channel-like NH3 flux by ammonium transporter AtAMT2. |
| Language: | English |
| Abstract: | Prokaryotes, plants and animals control ammonium fluxes by the regulated expression of ammonium transporters (AMTs) and/or the related Rhesus (Rh) proteins. Plant AMTs were previously reported to mediate electrogenic transport. Functional analysis of AtAMT2 from Arabidopsis in yeast and oocytes suggests that NH(4)(+) is the recruited substrate, but the uncharged form NH(3) is conducted. AtAMT2 partially co-localized with electrogenic AMTs and conducted methylamine with low affinity. This transport mechanism may apply to other plant ammonium transporters and explains the different capacities of AMTs to accumulate ammonium in the plant cell. |
| Journal or Publication Title: | FEBS letters |
| Volume of the journal: | 583 |
| Issue Number: | 17 |
| Divisions: | 10 Department of Biology > Plant Nutrition and Biomass ?? fb10_botanik ?? 10 Department of Biology |
| Date Deposited: | 16 Mar 2010 13:06 |
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