Copper uptake / Cuproptosis / ZnT family / TRANSPORT PROTEIN
機能・相同性
機能・相同性情報
negative regulation of zinc ion transmembrane import / glutamatergic postsynaptic density / zinc export across plasma membrane / detoxification of zinc ion / detoxification of cadmium ion / zinc ion import into organelle / zinc:proton antiporter activity / Zinc efflux and compartmentalization by the SLC30 family / cadmium ion transmembrane transport / regulation of postsynaptic density protein 95 clustering ...negative regulation of zinc ion transmembrane import / glutamatergic postsynaptic density / zinc export across plasma membrane / detoxification of zinc ion / detoxification of cadmium ion / zinc ion import into organelle / zinc:proton antiporter activity / Zinc efflux and compartmentalization by the SLC30 family / cadmium ion transmembrane transport / regulation of postsynaptic density protein 95 clustering / zinc ion transport / negative regulation of neurotransmitter secretion / zinc ion transmembrane transporter activity / negative regulation of calcium ion import / zinc ion transmembrane transport / positive regulation of dendritic spine morphogenesis / intracellular zinc ion homeostasis / calcium ion import / postsynaptic density, intracellular component / calcium channel inhibitor activity / T-tubule / cytoplasmic vesicle membrane / postsynaptic density membrane / Schaffer collateral - CA1 synapse / intracellular calcium ion homeostasis / basolateral plasma membrane / nuclear membrane / in utero embryonic development / defense response to bacterium / Golgi membrane / dendrite / endoplasmic reticulum membrane / endoplasmic reticulum / Golgi apparatus / metal ion binding / membrane / plasma membrane / cytoplasm 類似検索 - 分子機能
ジャーナル: Cell Metab / 年: 2024 タイトル: Zinc transporter 1 functions in copper uptake and cuproptosis. 著者: Yehua Li / Jiahao Ma / Rui Wang / Yuanhanyu Luo / Sanduo Zheng / Xiaodong Wang / 要旨: Copper (Cu) is a co-factor for several essential metabolic enzymes. Disruption of Cu homeostasis results in genetic diseases such as Wilson's disease. Here, we show that the zinc transporter 1 (ZnT1) ...Copper (Cu) is a co-factor for several essential metabolic enzymes. Disruption of Cu homeostasis results in genetic diseases such as Wilson's disease. Here, we show that the zinc transporter 1 (ZnT1), known to export zinc (Zn) out of the cell, also mediates Cu entry into cells and is required for Cu-induced cell death, cuproptosis. Structural analysis and functional characterization indicate that Cu and Zn share the same primary binding site, allowing Zn to compete for Cu uptake. Among ZnT members, ZnT1 harbors a unique inter-subunit disulfide bond that stabilizes the outward-open conformations of both protomers to facilitate efficient Cu transport. Specific knockout of the ZnT1 gene in the intestinal epithelium caused the loss of Lgr5+ stem cells due to Cu deficiency. ZnT1, therefore, functions as a dual Zn and Cu transporter and potentially serves as a target for using Zn in the treatment of Wilson's disease caused by Cu overload.