+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 9bq2 | |||||||||
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タイトル | Structure of the flotillin complex in a native membrane environment | |||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / Flotillin complex / SPFH / membrane interaction / endocytosis | |||||||||
機能・相同性 | 機能・相同性情報 plasma membrane raft assembly / regulation of neurotransmitter uptake / positive regulation of cell junction assembly / positive regulation of synaptic transmission, dopaminergic / plasma membrane raft organization / positive regulation of toll-like receptor 3 signaling pathway / positive regulation of cell-cell adhesion mediated by cadherin / protein kinase C signaling / dsRNA transport / regulation of receptor internalization ...plasma membrane raft assembly / regulation of neurotransmitter uptake / positive regulation of cell junction assembly / positive regulation of synaptic transmission, dopaminergic / plasma membrane raft organization / positive regulation of toll-like receptor 3 signaling pathway / positive regulation of cell-cell adhesion mediated by cadherin / protein kinase C signaling / dsRNA transport / regulation of receptor internalization / uropod / positive regulation of skeletal muscle tissue development / Synaptic adhesion-like molecules / dopaminergic synapse / flotillin complex / cell-cell contact zone / regulation of Rho protein signal transduction / positive regulation of heterotypic cell-cell adhesion / microtubule organizing center / cellular response to exogenous dsRNA / RIPK1-mediated regulated necrosis / positive regulation of myoblast fusion / RHOB GTPase cycle / RHOC GTPase cycle / presynaptic active zone / positive regulation of endocytosis / centriolar satellite / extracellular matrix disassembly / RHOA GTPase cycle / GABA-ergic synapse / ionotropic glutamate receptor binding / response to endoplasmic reticulum stress / positive regulation of interferon-beta production / axonogenesis / positive regulation of cytokine production / protein localization to plasma membrane / adherens junction / caveola / Regulation of necroptotic cell death / sarcolemma / cell-cell junction / melanosome / positive regulation of protein binding / lamellipodium / cytoplasmic vesicle / basolateral plasma membrane / protease binding / positive regulation of canonical NF-kappaB signal transduction / early endosome / protein stabilization / cell adhesion / endosome / positive regulation of protein phosphorylation / membrane raft / lysosomal membrane / external side of plasma membrane / intracellular membrane-bounded organelle / focal adhesion / glutamatergic synapse / extracellular exosome / membrane / plasma membrane 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) | |||||||||
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: 3.5 Å | |||||||||
データ登録者 | Fu, Z. / MacKinnon, R. | |||||||||
資金援助 | 米国, 2件
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引用 | ジャーナル: Proc Natl Acad Sci U S A / 年: 2024 タイトル: Structure of the flotillin complex in a native membrane environment. 著者: Ziao Fu / Roderick MacKinnon / 要旨: In this study, we used cryoelectron microscopy to determine the structures of the Flotillin protein complex, part of the Stomatin, Prohibitin, Flotillin, and HflK/C (SPFH) superfamily, from cell- ...In this study, we used cryoelectron microscopy to determine the structures of the Flotillin protein complex, part of the Stomatin, Prohibitin, Flotillin, and HflK/C (SPFH) superfamily, from cell-derived vesicles without detergents. It forms a right-handed helical barrel consisting of 22 pairs of Flotillin1 and Flotillin2 subunits, with a diameter of 32 nm at its wider end and 19 nm at its narrower end. Oligomerization is stabilized by the C terminus, which forms two helical layers linked by a β-strand, and coiled-coil domains that enable strong charge-charge intersubunit interactions. Flotillin interacts with membranes at both ends; through its SPFH1 domains at the wide end and the C terminus at the narrow end, facilitated by hydrophobic interactions and lipidation. The inward tilting of the SPFH domain, likely triggered by phosphorylation, suggests its role in membrane curvature induction, which could be connected to its proposed role in clathrin-independent endocytosis. The structure suggests a shared architecture across the family of SPFH proteins and will promote further research into Flotillin's roles in cell biology. | |||||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 9bq2.cif.gz | 261.3 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb9bq2.ent.gz | 213.1 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 9bq2.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 9bq2_validation.pdf.gz | 1.4 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 9bq2_full_validation.pdf.gz | 1.4 MB | 表示 | |
XML形式データ | 9bq2_validation.xml.gz | 35 KB | 表示 | |
CIF形式データ | 9bq2_validation.cif.gz | 50.9 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/bq/9bq2 ftp://data.pdbj.org/pub/pdb/validation_reports/bq/9bq2 | HTTPS FTP |
-関連構造データ
関連構造データ | 44792MC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
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対称性 | 点対称性: (シェーンフリース記号: C22 (22回回転対称)) |
-要素
#1: タンパク質 | 分子量: 44572.133 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 細胞株: HEK293 / 参照: UniProt: J3QLD9 |
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#2: タンパク質 | 分子量: 46880.641 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 細胞株: HEK293 / 参照: UniProt: O75955 |
-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 |
-試料調製
構成要素 | 名称: Flotillin complex / タイプ: COMPLEX / Entity ID: all / 由来: NATURAL |
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分子量 | 実験値: NO |
由来(天然) | 生物種: Homo sapiens (ヒト) |
緩衝液 | pH: 7.4 |
試料 | 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 |
-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: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 1000 nm |
撮影 | 電子線照射量: 42 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) |
-解析
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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対称性 | 点対称性: C22 (22回回転対称) |
3次元再構成 | 解像度: 3.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 1436 / 対称性のタイプ: POINT |