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ZnT and ZIP intracellular localizations. The diagram shows the localization of ZnT (green) and ZIP (yellow) proteins, and the direction of Zn transport (black arrows) for each organelle and plasma membrane. In terms of Zn homeostasis, ZnT and ZIP maintain the influx and efflux of Zn ions between the cell and extracellular spaces, or between the cytosol and the organelle compartments, thereby maintaining appropriate Zn concentrations in the cells
