Molecular mechanisms of ammonium transport and accumulation in plants.
The integral membrane proteins of the ammonium transporter (AMT/Rh) family provide the major route for shuttling ammonium (NH(4)(+)/NH(3)) across bacterial, archaeal, fungal and plant membranes. These proteins are distantly related to the Rh (rhesus) glycoproteins, which are absent in higher plants, but are present in many species, including bacteria and mammals. It appears that the large nitrogen requirement of plants resulted in unique strategies to acquire, capture and/or release ammonium. The biological function of plant ammonium transporters will be discussed and compared to other AMT/Rh proteins.
Ludewig
Uwe
U
Zentrum für Molekularbiologie der Pflanzen (ZMBP), Pflanzenphysiologie, Universität Tübingen, Auf der Morgenstelle 1, 72076 Tübingen, Germany. uwe.ludewig@zmbp.uni-tuebingen.de
Neuhäuser
Benjamin
B
Dynowski
Marek
M
D000818:Animals; D001798:Blood Proteins / Q000235:genetics / Q000378:metabolism; D027682:Cation Transport Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D017343:Genes, Plant; D006801:Humans; D017136:Ion Transport; D008562:Membrane Glycoproteins / Q000235:genetics / Q000378:metabolism; D008954:Models, Biological; D008958:Models, Molecular; D010802:Phylogeny; D010940:Plant Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D010944:Plants / Q000187:drug effects / Q000235:genetics / Q000378:metabolism*; D000644:Quaternary Ammonium Compounds / Q000378:metabolism* / Q000633:toxicity; D013045:Species Specificity; D013559:Symbiosis
D001798:Blood Proteins; D027682:Cation Transport Proteins; D008562:Membrane Glycoproteins; D010940:Plant Proteins; D000644:Quaternary Ammonium Compounds; C498523:RHAG protein, human; C088952:ammonium transporters, plant