- EMDB-7831: Cryo-EM structure of FLNaABD E254K bound to phalloidin-stabilized... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-7831
タイトル
Cryo-EM structure of FLNaABD E254K bound to phalloidin-stabilized F-actin
マップデータ
Symmetrized map of FLNaABD-E254K bound to phalloidin-stabilized F-actin. This map has been low-pass filtered to 3.6 A and sharpened with a B-factor of -150.
試料
複合体: Helical complex of FLNaABD E254K bound to phalloidin-stabilized F-actin
タンパク質・ペプチド: Filamin-A
タンパク質・ペプチド: Actin, alpha skeletal muscle
タンパク質・ペプチド: Phalloidin
リガンド: ADENOSINE-5'-DIPHOSPHATE
リガンド: MAGNESIUM ION
キーワード
Actin-binding domain / Actin crosslinker / STRUCTURAL PROTEIN
機能・相同性
機能・相同性情報
regulation of membrane repolarization during atrial cardiac muscle cell action potential / regulation of membrane repolarization during cardiac muscle cell action potential / establishment of Sertoli cell barrier / Myb complex / glycoprotein Ib-IX-V complex / adenylate cyclase-inhibiting dopamine receptor signaling pathway / formation of radial glial scaffolds / positive regulation of integrin-mediated signaling pathway / actin crosslink formation / tubulin deacetylation ...regulation of membrane repolarization during atrial cardiac muscle cell action potential / regulation of membrane repolarization during cardiac muscle cell action potential / establishment of Sertoli cell barrier / Myb complex / glycoprotein Ib-IX-V complex / adenylate cyclase-inhibiting dopamine receptor signaling pathway / formation of radial glial scaffolds / positive regulation of integrin-mediated signaling pathway / actin crosslink formation / tubulin deacetylation / blood coagulation, intrinsic pathway / protein localization to bicellular tight junction / OAS antiviral response / Striated Muscle Contraction / positive regulation of actin filament bundle assembly / positive regulation of neuron migration / Cell-extracellular matrix interactions / early endosome to late endosome transport / Fc-gamma receptor I complex binding / positive regulation of potassium ion transmembrane transport / apical dendrite / cell-cell junction organization / positive regulation of neural precursor cell proliferation / positive regulation of platelet activation / protein localization to cell surface / wound healing, spreading of cells / podosome / negative regulation of transcription by RNA polymerase I / megakaryocyte development / GP1b-IX-V activation signalling / receptor clustering / positive regulation of axon regeneration / cortical cytoskeleton / SMAD binding / RHO GTPases activate PAKs / actin filament bundle / brush border / semaphorin-plexin signaling pathway / striated muscle thin filament / skeletal muscle thin filament assembly / cilium assembly / blood vessel remodeling / mitotic spindle assembly / epithelial to mesenchymal transition / potassium channel regulator activity / axonal growth cone / heart morphogenesis / stress fiber / skeletal muscle fiber development / release of sequestered calcium ion into cytosol / positive regulation of substrate adhesion-dependent cell spreading / protein sequestering activity / regulation of cell migration / dendritic shaft / protein kinase C binding / protein localization to plasma membrane / actin filament / negative regulation of DNA-binding transcription factor activity / trans-Golgi network / mRNA transcription by RNA polymerase II / G protein-coupled receptor binding / establishment of protein localization / synapse organization / negative regulation of protein catabolic process / cerebral cortex development / small GTPase binding / 加水分解酵素; 酸無水物に作用; 酸無水物に作用・細胞または細胞小器官の運動に関与 / Z disc / kinase binding / platelet aggregation / positive regulation of protein import into nucleus / actin filament binding / cell-cell junction / Platelet degranulation / actin cytoskeleton / negative regulation of neuron projection development / actin cytoskeleton organization / toxin activity / GTPase binding / angiogenesis / DNA-binding transcription factor binding / perikaryon / transmembrane transporter binding / positive regulation of canonical NF-kappaB signal transduction / hydrolase activity / postsynapse / protein stabilization / cadherin binding / focal adhesion / negative regulation of apoptotic process / nucleolus / perinuclear region of cytoplasm / glutamatergic synapse / protein homodimerization activity / RNA binding / extracellular exosome / extracellular region / ATP binding / nucleus / membrane 類似検索 - 分子機能
ジャーナル: Nat Struct Mol Biol / 年: 2018 タイトル: Structural basis of the filamin A actin-binding domain interaction with F-actin. 著者: Daniel V Iwamoto / Andrew Huehn / Bertrand Simon / Clotilde Huet-Calderwood / Massimiliano Baldassarre / Charles V Sindelar / David A Calderwood / 要旨: Actin-cross-linking proteins assemble actin filaments into higher-order structures essential for orchestrating cell shape, adhesion, and motility. Missense mutations in the tandem calponin homology ...Actin-cross-linking proteins assemble actin filaments into higher-order structures essential for orchestrating cell shape, adhesion, and motility. Missense mutations in the tandem calponin homology domains of their actin-binding domains (ABDs) underlie numerous genetic diseases, but a molecular understanding of these pathologies is hampered by the lack of high-resolution structures of any actin-cross-linking protein bound to F-actin. Here, taking advantage of a high-affinity, disease-associated mutant of the human filamin A (FLNa) ABD, we combine cryo-electron microscopy and functional studies to reveal at near-atomic resolution how the first calponin homology domain (CH1) and residues immediately N-terminal to it engage actin. We further show that reorientation of CH2 relative to CH1 is required to avoid clashes with actin and to expose F-actin-binding residues on CH1. Our data explain localization of disease-associated loss-of-function mutations to FLNaCH1 and gain-of-function mutations to the regulatory FLNaCH2. Sequence conservation argues that this provides a general model for ABD-F-actin binding.
#241 - 2020年1月 20年の分子を振り返って (Twenty Years of Molecules) 類似性 (3)
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マップ
ファイル
ダウンロード / ファイル: emd_7831.map.gz / 形式: CCP4 / 大きさ: 35.3 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
注釈
Symmetrized map of FLNaABD-E254K bound to phalloidin-stabilized F-actin. This map has been low-pass filtered to 3.6 A and sharpened with a B-factor of -150.
Symmetrized map of FLNaABD-E254K bound to phalloidin-stabilized F-actin. Low-pass filtered to 10 A and sharpened with a B-factor of -150. Masked to display the FLNaABD CH2 domain cryo-EM density.
Independently refined half map(2) of FLNaABD-E254K bound to phalloidin-stabilized F-actin. This half map was symmetrized using parameters calculated from the full map.
Independently refined half map(1) of FLNaABD-E254K bound to phalloidin-stabilized F-actin. This half map was symmetrized using parameters calculated from the full map.
フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 検出モード: SUPER-RESOLUTION / デジタル化 - 画像ごとのフレーム数: 1-40 / 撮影したグリッド数: 2 / 実像数: 2140 / 平均露光時間: 12.0 sec. / 平均電子線量: 50.0 e/Å2 詳細: Micrographs from only one of the grids were used in the reconstruction. From that grid, only micrographs where Gctf detected signal at resolutions better than 4A were used in the reconstruction (~15%).