Zinc transporter, that transports Zn(2+) from the endoplasmic reticulum/Golgi apparatus to the cytosol. Transport is stimulated by growth factors, such as EGF, and Ca(2+), as well as by exogenous Zn(2+). Widely expressed. Down-regulated by Zn(+2). Rapidly phosphorylated by CK2 following Zn(2+) treatment. This phosphorylation is required for efficient cytosolic Zn(2+) release. Methylation at some His residue by METTL9 leads to reduced zinc-binding. Belongs to the ZIP transporter (TC 2.A.5) family. KE4/Catsup subfamily.