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_name
FEBS Lettjournal_title
FEBS lettersauthors
Neuhäuser B,Dynowski M,Ludewig Udoi
10.1016/j.febslet.2009.07.039subject
Has Abstractpub_date
2009-09-03 00:00:00pages
2833-8issue
17eissn
0014-5793issn
1873-3468pii
S0014-5793(09)00587-0journal_volume
583pub_type
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