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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 6gsr | ||||||
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タイトル | Single Particle Cryo-EM map of human Transferrin receptor 1 - H-Ferritin complex at 5.5 Angstrom resolution. | ||||||
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![]() | METAL BINDING PROTEIN / Transferrin Receptor 1 / Ferritin / Complex / Single Particle Cryo-EM | ||||||
機能・相同性 | ![]() transferrin receptor activity / postsynaptic recycling endosome membrane / negative regulation of mitochondrial fusion / transferrin transport / Transferrin endocytosis and recycling / positive regulation of isotype switching / response to copper ion / Differentiation of Keratinocytes in Interfollicular Epidermis in Mammalian Skin / response to iron ion / response to manganese ion ...transferrin receptor activity / postsynaptic recycling endosome membrane / negative regulation of mitochondrial fusion / transferrin transport / Transferrin endocytosis and recycling / positive regulation of isotype switching / response to copper ion / Differentiation of Keratinocytes in Interfollicular Epidermis in Mammalian Skin / response to iron ion / response to manganese ion / iron ion sequestering activity / RND1 GTPase cycle / ferritin complex / RND2 GTPase cycle / negative regulation of ferroptosis / Scavenging by Class A Receptors / RHOB GTPase cycle / Golgi Associated Vesicle Biogenesis / ferroxidase / RHOC GTPase cycle / RHOJ GTPase cycle / RHOQ GTPase cycle / autolysosome / ferroxidase activity / CDC42 GTPase cycle / RHOH GTPase cycle / RHOG GTPase cycle / RHOA GTPase cycle / RAC2 GTPase cycle / RAC3 GTPase cycle / positive regulation of bone resorption / regulation of postsynaptic membrane neurotransmitter receptor levels / transport across blood-brain barrier / response to retinoic acid / positive regulation of T cell proliferation / negative regulation of fibroblast proliferation / clathrin-coated pit / positive regulation of B cell proliferation / RAC1 GTPase cycle / response to nutrient / Hsp70 protein binding / ferric iron binding / osteoclast differentiation / autophagosome / cellular response to leukemia inhibitory factor / acute-phase response / positive regulation of protein-containing complex assembly / clathrin-coated endocytic vesicle membrane / Iron uptake and transport / HFE-transferrin receptor complex / ferrous iron binding / recycling endosome / receptor internalization / positive regulation of protein localization to nucleus / multicellular organismal-level iron ion homeostasis / recycling endosome membrane / tertiary granule lumen / melanosome / cellular response to xenobiotic stimulus / Cargo recognition for clathrin-mediated endocytosis / extracellular vesicle / double-stranded RNA binding / Clathrin-mediated endocytosis / iron ion transport / virus receptor activity / cytoplasmic vesicle / basolateral plasma membrane / blood microparticle / ficolin-1-rich granule lumen / intracellular iron ion homeostasis / positive regulation of canonical NF-kappaB signal transduction / early endosome / response to hypoxia / endosome / endosome membrane / intracellular signal transduction / immune response / iron ion binding / external side of plasma membrane / negative regulation of cell population proliferation / intracellular membrane-bounded organelle / Neutrophil degranulation / positive regulation of gene expression / protein-containing complex binding / negative regulation of apoptotic process / protein kinase binding / perinuclear region of cytoplasm / glutamatergic synapse / cell surface / protein homodimerization activity / extracellular space / RNA binding / extracellular exosome / extracellular region / identical protein binding / nucleus / membrane / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | ![]() | ||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 5.5 Å | ||||||
![]() | Testi, C. / Montemiglio, L.C. / Vallone, B. / Des Georges, A. / Boffi, A. / Mancia, F. / Baiocco, P. | ||||||
![]() | ![]() タイトル: Cryo-EM structure of the human ferritin-transferrin receptor 1 complex. 著者: Linda Celeste Montemiglio / Claudia Testi / Pierpaolo Ceci / Elisabetta Falvo / Martina Pitea / Carmelinda Savino / Alessandro Arcovito / Giovanna Peruzzi / Paola Baiocco / Filippo Mancia / ...著者: Linda Celeste Montemiglio / Claudia Testi / Pierpaolo Ceci / Elisabetta Falvo / Martina Pitea / Carmelinda Savino / Alessandro Arcovito / Giovanna Peruzzi / Paola Baiocco / Filippo Mancia / Alberto Boffi / Amédée des Georges / Beatrice Vallone / ![]() ![]() 要旨: Human transferrin receptor 1 (CD71) guarantees iron supply by endocytosis upon binding of iron-loaded transferrin and ferritin. Arenaviruses and the malaria parasite exploit CD71 for cell invasion ...Human transferrin receptor 1 (CD71) guarantees iron supply by endocytosis upon binding of iron-loaded transferrin and ferritin. Arenaviruses and the malaria parasite exploit CD71 for cell invasion and epitopes on CD71 for interaction with transferrin and pathogenic hosts were identified. Here, we provide the molecular basis of the CD71 ectodomain-human ferritin interaction by determining the 3.9 Å resolution single-particle cryo-electron microscopy structure of their complex and by validating our structural findings in a cellular context. The contact surfaces between the heavy-chain ferritin and CD71 largely overlap with arenaviruses and Plasmodium vivax binding regions in the apical part of the receptor ectodomain. Our data account for transferrin-independent binding of ferritin to CD71 and suggest that select pathogens may have adapted to enter cells by mimicking the ferritin access gate. | ||||||
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構造の表示
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構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 1.3 MB | 表示 | ![]() |
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PDB形式 | ![]() | 表示 | ![]() | |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
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リンク
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集合体
登録構造単位 | ![]()
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1 |
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要素
#1: タンパク質 | 分子量: 21124.459 Da / 分子数: 24 / 由来タイプ: 組換発現 詳細: Chain Am, E14, R22, L29, R79, F81, K119 no side chains 由来: (組換発現) ![]() ![]() ![]() #2: タンパク質 | 分子量: 71807.258 Da / 分子数: 2 / 由来タイプ: 組換発現 / 詳細: Chain Ab, L209 and Y211 no side chains. / 由来: (組換発現) ![]() ![]() Has protein modification | Y | |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
構成要素 |
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由来(天然) | 生物種: ![]() | ||||||||||||||||||||||||
由来(組換発現) | 生物種: ![]() ![]() | ||||||||||||||||||||||||
緩衝液 | pH: 7.2 | ||||||||||||||||||||||||
試料 | 濃度: 0.2 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||||||
急速凍結 | 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 K |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: OTHER |
撮影 | 電子線照射量: 40 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
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解析
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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粒子像の選択 | 選択した粒子像数: 25870 |
対称性 | 点対称性: C1 (非対称) |
3次元再構成 | 解像度: 5.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 25870 / 対称性のタイプ: POINT |
原子モデル構築 | プロトコル: RIGID BODY FIT |