- PDB-9bpi: C-terminus truncated (last two residues) mutant of Human light ch... -
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基本情報
登録情報
データベース: PDB / ID: 9bpi
タイトル
C-terminus truncated (last two residues) mutant of Human light chain ferritin reacted with Ferrous salt(3 Fe2+ per ferritin subunit) . Reconstruction of particles with one nanoparticle
要素
Ferritin light chain
キーワード
METAL BINDING PROTEIN / Iron oxide binding protein
機能・相同性
機能・相同性情報
ferritin complex / Scavenging by Class A Receptors / Golgi Associated Vesicle Biogenesis / autolysosome / ferric iron binding / autophagosome / Iron uptake and transport / ferrous iron binding / azurophil granule lumen / iron ion transport ...ferritin complex / Scavenging by Class A Receptors / Golgi Associated Vesicle Biogenesis / autolysosome / ferric iron binding / autophagosome / Iron uptake and transport / ferrous iron binding / azurophil granule lumen / iron ion transport / intracellular iron ion homeostasis / iron ion binding / Neutrophil degranulation / extracellular exosome / extracellular region / identical protein binding / membrane / cytosol / cytoplasm 類似検索 - 分子機能
ジャーナル: J Am Chem Soc / 年: 2025 タイトル: Observation of the Protein-Inorganic Interface of Ferritin by Cryo-Electron Microscopy. 著者: Sagnik Sen / Amar Thaker / Alison Haymaker / Dewight Williams / Po-Lin Chiu / Brent L Nannenga / 要旨: Visualizing the structure of the protein-inorganic interface is critically important for a more complete understanding of biomineralization. Unfortunately, there are limited approaches for the direct ...Visualizing the structure of the protein-inorganic interface is critically important for a more complete understanding of biomineralization. Unfortunately, there are limited approaches for the direct and detailed study of biomolecules that interact with inorganic materials. Here, we use single-particle cryo-electron microscopy (cryo-EM) to study the protein-nanoparticle (NP) interactions of human light chain ferritin and visualize the high-resolution details of the protein-inorganic interface. In this work, we determined the 2.85 Å structure of human light chain ferritin bound to its native iron oxide NP substrate. The resulting cryo-EM maps confirmed and enhanced previously proposed interactions of the protein with the material along the B-helix and revealed new interaction at the C-terminus of light chain ferritin. This work sheds new light on the mechanisms of ferritin biomineralization and further demonstrates the application of cryo-EM for the study of protein-inorganic systems.