Molecular Mechanisms of Ammonium Transport and Accumulation in Plants

FEBS Lett. 2007 May 25;581(12):2301-8. doi: 10.1016/j.febslet.2007.03.034. Epub 2007 Mar 22.

Abstract

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.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Blood Proteins / genetics
  • Blood Proteins / metabolism
  • Cation Transport Proteins / chemistry
  • Cation Transport Proteins / genetics
  • Cation Transport Proteins / metabolism*
  • Genes, Plant
  • Humans
  • Ion Transport
  • Membrane Glycoproteins / genetics
  • Membrane Glycoproteins / metabolism
  • Models, Biological
  • Models, Molecular
  • Phylogeny
  • Plant Proteins / chemistry
  • Plant Proteins / genetics
  • Plant Proteins / metabolism*
  • Plants / drug effects
  • Plants / genetics
  • Plants / metabolism*
  • Quaternary Ammonium Compounds / metabolism*
  • Quaternary Ammonium Compounds / toxicity
  • Species Specificity
  • Symbiosis

Substances

  • Blood Proteins
  • Cation Transport Proteins
  • Membrane Glycoproteins
  • Plant Proteins
  • Quaternary Ammonium Compounds
  • RHAG protein, human
  • ammonium transporters, plant