- PDB-6wik: Cryo-EM structure of SLC40/ferroportin with Fab in the presence o... -
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データベース: PDB / ID: 6wik
タイトル
Cryo-EM structure of SLC40/ferroportin with Fab in the presence of hepcidin
要素
11F9 Fab heavy-chain
11F9 Fab light-chain
Solute carrier family 40 protein
キーワード
MEMBRANE PROTEIN / SLC40 / Fpn / ferroportin / iron transporter / hepcidin
機能・相同性
機能・相同性情報
ferrous iron transmembrane transporter activity / peptide hormone binding / basolateral plasma membrane / intracellular iron ion homeostasis / metal ion binding 類似検索 - 分子機能
National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)
DK122784
米国
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)
HL086392
米国
Cancer Prevention and Research Institute of Texas (CPRIT)
R1223
米国
引用
ジャーナル: Nat Commun / 年: 2020 タイトル: Structural basis of ion transport and inhibition in ferroportin. 著者: Yaping Pan / Zhenning Ren / Shuai Gao / Jiemin Shen / Lie Wang / Zhichun Xu / Ye Yu / Preetham Bachina / Hanzhi Zhang / Xiao Fan / Arthur Laganowsky / Nieng Yan / Ming Zhou / 要旨: Ferroportin is an iron exporter essential for releasing cellular iron into circulation. Ferroportin is inhibited by a peptide hormone, hepcidin. In humans, mutations in ferroportin lead to ...Ferroportin is an iron exporter essential for releasing cellular iron into circulation. Ferroportin is inhibited by a peptide hormone, hepcidin. In humans, mutations in ferroportin lead to ferroportin diseases that are often associated with accumulation of iron in macrophages and symptoms of iron deficiency anemia. Here we present the structures of the ferroportin from the primate Philippine tarsier (TsFpn) in the presence and absence of hepcidin solved by cryo-electron microscopy. TsFpn is composed of two domains resembling a clamshell and the structure defines two metal ion binding sites, one in each domain. Both structures are in an outward-facing conformation, and hepcidin binds between the two domains and reaches one of the ion binding sites. Functional studies show that TsFpn is an electroneutral H/Fe antiporter so that transport of each Fe is coupled to transport of two H in the opposite direction. Perturbing either of the ion binding sites compromises the coupled transport of H and Fe. These results establish the structural basis of metal ion binding, transport and inhibition in ferroportin and provide a blueprint for targeting ferroportin in pharmacological intervention of ferroportin diseases.
履歴
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2020年4月10日
登録サイト: RCSB / 処理サイト: RCSB
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2020年11月11日
Provider: repository / タイプ: Initial release
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2020年11月11日
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2020年11月11日
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2020年11月11日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
改定 1.0
2020年11月11日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2020年11月11日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
改定 1.0
2020年11月11日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2020年11月11日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
改定 1.0
2020年11月11日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2020年11月11日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
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