登録情報 データベース : EMDB / ID : EMD-35329 ダウンロードとリンクタイトル Structure of mammalian spectrin-actin junctional complex of membrane skeleton, Pointed-end segment, headpiece domain of dematin optimized マップデータ 詳細 試料複合体 : Spectrin-actin junctional complexタンパク質・ペプチド : Dematin actin binding proteinタンパク質・ペプチド : Actin, cytoplasmic 1リガンド : ADENOSINE-5'-DIPHOSPHATE 詳細 キーワード Macrocomplex / membrane skeleton / spectrin-actin junction / MEMBRANE PROTEIN機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
negative regulation of protein targeting to membrane / endoplasmic reticulum tubular network organization / Regulation of actin dynamics for phagocytic cup formation / EPHB-mediated forward signaling / Adherens junctions interactions / VEGFA-VEGFR2 Pathway / Cell-extracellular matrix interactions / RHO GTPases Activate WASPs and WAVEs / MAP2K and MAPK activation / UCH proteinases ... negative regulation of protein targeting to membrane / endoplasmic reticulum tubular network organization / Regulation of actin dynamics for phagocytic cup formation / EPHB-mediated forward signaling / Adherens junctions interactions / VEGFA-VEGFR2 Pathway / Cell-extracellular matrix interactions / RHO GTPases Activate WASPs and WAVEs / MAP2K and MAPK activation / UCH proteinases / Gap junction degradation / Formation of annular gap junctions / RHOF GTPase cycle / Clathrin-mediated endocytosis / Formation of the dystrophin-glycoprotein complex (DGC) / spectrin-associated cytoskeleton / negative regulation of substrate adhesion-dependent cell spreading / platelet dense tubular network membrane / cellular response to cytochalasin B / negative regulation of focal adhesion assembly / regulation of transepithelial transport / morphogenesis of a polarized epithelium / regulation of filopodium assembly / cell projection membrane / protein localization to adherens junction / postsynaptic actin cytoskeleton / structural constituent of postsynaptic actin cytoskeleton / Tat protein binding / dense body / apical protein localization / regulation of lamellipodium assembly / adherens junction assembly / positive regulation of fibroblast migration / RHO GTPases activate IQGAPs / RHO GTPases Activate Formins / tight junction / smooth endoplasmic reticulum calcium ion homeostasis / regulation of norepinephrine uptake / apical junction complex / transporter regulator activity / nitric-oxide synthase binding / positive regulation of wound healing / spectrin binding / NuA4 histone acetyltransferase complex / establishment or maintenance of cell polarity / cortical cytoskeleton / regulation of synaptic vesicle endocytosis / brush border / kinesin binding / erythrocyte development / smooth endoplasmic reticulum / positive regulation of double-strand break repair via homologous recombination / regulation of protein localization to plasma membrane / cellular response to cAMP / calyx of Held / axonogenesis / adherens junction / actin filament / regulation of actin cytoskeleton organization / cell motility / Schaffer collateral - CA1 synapse / 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 / cytoplasmic ribonucleoprotein granule / nucleosome / lamellipodium / actin cytoskeleton / regulation of cell shape / actin binding / actin cytoskeleton organization / protein-containing complex assembly / cytoplasmic vesicle / cytoskeleton / regulation of cell cycle / postsynaptic density / axon / ribonucleoprotein complex / signaling receptor binding / focal adhesion / synapse / protein kinase binding / perinuclear region of cytoplasm / glutamatergic synapse / protein-containing complex / ATP hydrolysis activity / ATP binding / identical protein binding / nucleus / membrane / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能 Putative adherens-junction anchoring domain / : / Putative adherens-junction anchoring region of AbLIM / Villin headpiece / Villin headpiece domain superfamily / Villin headpiece domain / Headpiece (HP) domain profile. / Villin headpiece domain / Actins signature 1. / Actin, conserved site ... Putative adherens-junction anchoring domain / : / Putative adherens-junction anchoring region of AbLIM / Villin headpiece / Villin headpiece domain superfamily / Villin headpiece domain / Headpiece (HP) domain profile. / Villin headpiece domain / Actins signature 1. / Actin, conserved site / Actins signature 2. / Actin/actin-like conserved site / Actins and actin-related proteins signature. / Actin / Actin family / Actin / ATPase, nucleotide binding domain 類似検索 - ドメイン・相同性 Dematin actin binding protein / Actin, cytoplasmic 1 類似検索 - 構成要素生物種 Sus scrofa (ブタ)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.8 Å 詳細 データ登録者Li N / Chen S / Gao N 資金援助 中国, 1件 詳細 詳細を隠すOrganization Grant number 国 National Science Foundation (NSF, China) 中国
引用ジャーナル : Cell / 年 : 2023タイトル : Structural basis of membrane skeleton organization in red blood cells.著者 : Ningning Li / Siyi Chen / Kui Xu / Meng-Ting He / Meng-Qiu Dong / Qiangfeng Cliff Zhang / Ning Gao / 要旨 : The spectrin-based membrane skeleton is a ubiquitous membrane-associated two-dimensional cytoskeleton underneath the lipid membrane of metazoan cells. Mutations of skeleton proteins impair the ... The spectrin-based membrane skeleton is a ubiquitous membrane-associated two-dimensional cytoskeleton underneath the lipid membrane of metazoan cells. Mutations of skeleton proteins impair the mechanical strength and functions of the membrane, leading to several different types of human diseases. Here, we report the cryo-EM structures of the native spectrin-actin junctional complex (from porcine erythrocytes), which is a specialized short F-actin acting as the central organizational unit of the membrane skeleton. While an α-/β-adducin hetero-tetramer binds to the barbed end of F-actin as a flexible cap, tropomodulin and SH3BGRL2 together create an absolute cap at the pointed end. The junctional complex is strengthened by ring-like structures of dematin in the middle actin layers and by patterned periodic interactions with tropomyosin over its entire length. This work serves as a structural framework for understanding the assembly and dynamics of membrane skeleton and offers insights into mechanisms of various ubiquitous F-actin-binding factors in other F-actin systems. 履歴 登録 2023年2月9日 - ヘッダ(付随情報) 公開 2023年4月26日 - マップ公開 2023年4月26日 - 更新 2024年7月3日 - 現状 2024年7月3日 処理サイト : PDBj / 状態 : 公開
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