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基本情報
登録情報 | データベース: PDB / ID: 8qfc | |||||||||||||||
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タイトル | UFL1 E3 ligase bound 60S ribosome | |||||||||||||||
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![]() | LIGASE / UFM1 / Ribosome / Complex | |||||||||||||||
機能・相同性 | ![]() positive regulation of metallopeptidase activity / : / positive regulation of I-kappaB phosphorylation / UFM1 ligase activity / UFM1-modified protein reader activity / positive regulation of reticulophagy / regulation of phosphatase activity / apoptotic nuclear changes / definitive erythrocyte differentiation / UFM1 transferase activity ...positive regulation of metallopeptidase activity / : / positive regulation of I-kappaB phosphorylation / UFM1 ligase activity / UFM1-modified protein reader activity / positive regulation of reticulophagy / regulation of phosphatase activity / apoptotic nuclear changes / definitive erythrocyte differentiation / UFM1 transferase activity / positive regulation of protein localization to endoplasmic reticulum / protein K69-linked ufmylation / positive regulation of proteolysis involved in protein catabolic process / negative regulation of protein kinase activity by regulation of protein phosphorylation / protein ufmylation / positive regulation of plasma cell differentiation / negative regulation of protein serine/threonine kinase activity / negative regulation of IRE1-mediated unfolded protein response / regulation of proteasomal ubiquitin-dependent protein catabolic process / negative regulation of T cell mediated immune response to tumor cell / protein localization to endoplasmic reticulum / positive regulation of cell cycle G1/S phase transition / negative regulation of T cell activation / regulation of intracellular estrogen receptor signaling pathway / positive regulation of proteasomal protein catabolic process / mitotic G2/M transition checkpoint / ribosome disassembly / 転移酵素; アシル基を移すもの; アミノアシル基を移すもの / regulation of canonical NF-kappaB signal transduction / mitogen-activated protein kinase binding / reticulophagy / regulation of cyclin-dependent protein serine/threonine kinase activity / cartilage development / regulation of neuron differentiation / response to L-glutamate / negative regulation of NF-kappaB transcription factor activity / mitotic G2 DNA damage checkpoint signaling / negative regulation of PERK-mediated unfolded protein response / ubiquitin-like protein ligase binding / Peptide chain elongation / Selenocysteine synthesis / negative regulation of protein phosphorylation / positive regulation of signal transduction by p53 class mediator / Formation of a pool of free 40S subunits / Eukaryotic Translation Termination / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / Viral mRNA Translation / RHOA GTPase cycle / negative regulation of MAP kinase activity / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / hematopoietic stem cell differentiation / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / NF-kappaB binding / ubiquitin-like ligase-substrate adaptor activity / Major pathway of rRNA processing in the nucleolus and cytosol / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / endoplasmic reticulum unfolded protein response / positive regulation of glial cell proliferation / positive regulation of autophagy / negative regulation of proteasomal ubiquitin-dependent protein catabolic process / MDM2/MDM4 family protein binding / cytosolic ribosome / rescue of stalled ribosome / negative regulation of protein ubiquitination / endomembrane system / cyclin binding / response to endoplasmic reticulum stress / regulation of mitotic cell cycle / erythrocyte differentiation / liver development / DNA damage checkpoint signaling / positive regulation of protein ubiquitination / brain development / regulation of protein stability / negative regulation of protein catabolic process / positive regulation of protein localization to nucleus / Regulation of expression of SLITs and ROBOs / positive regulation of NF-kappaB transcription factor activity / osteoblast differentiation / Antigen processing: Ubiquitination & Proteasome degradation / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / regulation of protein localization / site of double-strand break / regulation of inflammatory response / cytosolic large ribosomal subunit / RNA polymerase II-specific DNA-binding transcription factor binding / response to ethanol / mitochondrial outer membrane / cytoplasmic translation / cell population proliferation / neuron projection / postsynaptic density / protein stabilization / positive regulation of cell migration / structural constituent of ribosome / translation / negative regulation of gene expression / focal adhesion 類似検索 - 分子機能 | |||||||||||||||
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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: 3.2 Å | |||||||||||||||
![]() | Makhlouf, L. / Zeqiraj, E. / Kulathu, Y. | |||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: The UFM1 E3 ligase recognizes and releases 60S ribosomes from ER translocons. 著者: Linda Makhlouf / Joshua J Peter / Helge M Magnussen / Rohan Thakur / David Millrine / Thomas C Minshull / Grace Harrison / Joby Varghese / Frederic Lamoliatte / Martina Foglizzo / Thomas ...著者: Linda Makhlouf / Joshua J Peter / Helge M Magnussen / Rohan Thakur / David Millrine / Thomas C Minshull / Grace Harrison / Joby Varghese / Frederic Lamoliatte / Martina Foglizzo / Thomas Macartney / Antonio N Calabrese / Elton Zeqiraj / Yogesh Kulathu / ![]() 要旨: Stalled ribosomes at the endoplasmic reticulum (ER) are covalently modified with the ubiquitin-like protein UFM1 on the 60S ribosomal subunit protein RPL26 (also known as uL24). This modification, ...Stalled ribosomes at the endoplasmic reticulum (ER) are covalently modified with the ubiquitin-like protein UFM1 on the 60S ribosomal subunit protein RPL26 (also known as uL24). This modification, which is known as UFMylation, is orchestrated by the UFM1 ribosome E3 ligase (UREL) complex, comprising UFL1, UFBP1 and CDK5RAP3 (ref. ). However, the catalytic mechanism of UREL and the functional consequences of UFMylation are unclear. Here we present cryo-electron microscopy structures of UREL bound to 60S ribosomes, revealing the basis of its substrate specificity. UREL wraps around the 60S subunit to form a C-shaped clamp architecture that blocks the tRNA-binding sites at one end, and the peptide exit tunnel at the other. A UFL1 loop inserts into and remodels the peptidyl transferase centre. These features of UREL suggest a crucial function for UFMylation in the release and recycling of stalled or terminated ribosomes from the ER membrane. In the absence of functional UREL, 60S-SEC61 translocon complexes accumulate at the ER membrane, demonstrating that UFMylation is necessary for releasing SEC61 from 60S subunits. Notably, this release is facilitated by a functional switch of UREL from a 'writer' to a 'reader' module that recognizes its product-UFMylated 60S ribosomes. Collectively, we identify a fundamental role for UREL in dissociating 60S subunits from the SEC61 translocon and the basis for UFMylation in regulating protein homeostasis at the ER. | |||||||||||||||
履歴 |
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構造の表示
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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PDBx/mmCIF形式 | ![]() | 301.7 KB | 表示 | ![]() |
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PDB形式 | ![]() | 227.8 KB | 表示 | ![]() |
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その他 | ![]() |
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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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要素
#1: タンパク質 | 分子量: 24879.422 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
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#2: タンパク質 | 分子量: 91591.234 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() 参照: UniProt: O94874, 転移酵素; アシル基を移すもの; アミノアシル基を移すもの |
#3: タンパク質 | 分子量: 57458.938 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 遺伝子: CDK5RAP3, IC53, LZAP, MSTP016, OK/SW-cl.114, PP1553 発現宿主: ![]() ![]() |
#4: タンパク質 | 分子量: 34644.445 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
#5: タンパク質 | 分子量: 9236.628 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
-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 | 名称: UFM1 ribosome E3 ligase complex bound to 60S ribosome タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7.5 / 詳細: 25 mM HEPES pH 7.5, 50 mM KCl, 5 mM MgCl2, 2 mM DTT |
試料 | 濃度: 7.7 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 装置: FEI VITROBOT MARK IV / 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: BRIGHT FIELD / 倍率(公称値): 165000 X / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 200 nm |
撮影 | 平均露光時間: 2.67 sec. / 電子線照射量: 33.4 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) 撮影したグリッド数: 1 / 実像数: 59394 |
電子光学装置 | エネルギーフィルター名称: TFS Selectris X / エネルギーフィルタースリット幅: 10 eV |
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解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 299008 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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