Abstract 1873 Control of zinc availability in plant cells

Zinc (Zn) is an essential micronutrient for all living organisms. The risk of Zn malnutrition affects one third of the global human population and plants represent the main entry point for Zn into the food chain 1,2. Zinc acts as a structural or catalytic cofactor in nearly 10% of the proteins in eukaryotes. The cytosolic buffered available zinc concentration, [Zn2+]cyt, is a critical parameter that must be maintained within a narrow range in the cytoplasm to ensure proper protein metalation and avoid toxicity.