Lysosome-Related Organelles as Mediators of Metal Homeostasis [Plant Biology]

August 26th, 2014 by Blaby-Haas, C. E., Merchant, S. S.

Metal ion assimilation is essential for all forms of life. However, organisms must properly control the availability of these nutrients within the cell to avoid inactivating proteins by mismetallation. To safeguard against an imbalance between supply and demand in eukaryotes, intracellular compartments contain metal transporters that load and unload metals. While the vacuoles of Saccharomyces cerevisiae and Arabidopsis thaliana are well-established locales for the storage of copper, zinc, iron and manganese, related compartments are emerging as important mediators of metal homeostasis. Here we describe these compartments and review their metal transporters.