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-Structure paper
| タイトル | Structural insights into the calcium-coupled zinc export of human ZnT1. |
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| ジャーナル・号・ページ | Sci Adv, Vol. 10, Issue 17, Page eadk5128, Year 2024 |
| 掲載日 | 2024年4月26日 |
著者 | Chunqiao Sun / Bangguo He / Yongxiang Gao / Xingbing Wang / Xin Liu / Linfeng Sun / ![]() |
| PubMed 要旨 | Cellular zinc (Zn) homeostasis is essential to human health and is under tight regulations. Human zinc transporter 1 (hZnT1) is a plasma membrane-localized Zn exporter belonging to the ZnT family, ...Cellular zinc (Zn) homeostasis is essential to human health and is under tight regulations. Human zinc transporter 1 (hZnT1) is a plasma membrane-localized Zn exporter belonging to the ZnT family, and its functional aberration is associated with multiple diseases. Here, we show that hZnT1 works as a Zn/Ca exchanger. We determine the structure of hZnT1 using cryo-electron microscopy (cryo-EM) single particle analysis. hZnT1 adopts a homodimeric structure, and each subunit contains a transmembrane domain consisting of six transmembrane segments, a cytosolic domain, and an extracellular domain. The transmembrane region displays an outward-facing conformation. On the basis of structural and functional analysis, we propose a model for the hZnT1-mediated Zn/Ca exchange. Together, these results facilitate our understanding of the biological functions of hZnT1 and provide a basis for further investigations of the ZnT family transporters. |
リンク | Sci Adv / PubMed:38669333 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 3.4 Å |
| 構造データ | EMDB-35949, PDB-8j2g: |
| 由来 |
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キーワード | TRANSPORT PROTEIN / zinc exporter |
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