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基本情報
登録情報 | データベース: PDB / ID: 6r8f | ||||||
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タイトル | Cryo-EM structure of the Human BRISC-SHMT2 complex | ||||||
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![]() | SIGNALING PROTEIN / Complex / Deubiquitylation / Ubiquitin / Immune signalling | ||||||
機能・相同性 | ![]() peroxisome targeting sequence binding / BRISC complex / L-allo-threonine aldolase activity / regulation of mitochondrial translation / BRCA1-A complex / glycine metabolic process / attachment of spindle microtubules to kinetochore / L-serine metabolic process / regulation of oxidative phosphorylation / nuclear ubiquitin ligase complex ...peroxisome targeting sequence binding / BRISC complex / L-allo-threonine aldolase activity / regulation of mitochondrial translation / BRCA1-A complex / glycine metabolic process / attachment of spindle microtubules to kinetochore / L-serine metabolic process / regulation of oxidative phosphorylation / nuclear ubiquitin ligase complex / L-serine biosynthetic process / glycine hydroxymethyltransferase / glycine hydroxymethyltransferase activity / glycine biosynthetic process from serine / 加水分解酵素; プロテアーゼ; ペプチド結合加水分解酵素; オメガペプチターゼ / Metabolism of folate and pterines / tetrahydrofolate metabolic process / regulation of DNA damage checkpoint / response to type I interferon / mitotic G2/M transition checkpoint / tumor necrosis factor receptor binding / metal-dependent deubiquitinase activity / protein K63-linked deubiquitination / tetrahydrofolate interconversion / regulation of aerobic respiration / K63-linked deubiquitinase activity / response to ionizing radiation / amino acid binding / DNA repair-dependent chromatin remodeling / positive regulation of NLRP3 inflammasome complex assembly / mitotic G2 DNA damage checkpoint signaling / mitochondrial nucleoid / RHOG GTPase cycle / polyubiquitin modification-dependent protein binding / protein deubiquitination / mitotic spindle assembly / response to X-ray / ubiquitin ligase complex / regulation of DNA repair / enzyme regulator activity / Mitochondrial protein degradation / one-carbon metabolic process / positive regulation of DNA repair / response to ischemia / cellular response to ionizing radiation / chromosome segregation / Nonhomologous End-Joining (NHEJ) / protein tetramerization / G2/M DNA damage checkpoint / Metalloprotease DUBs / spindle pole / metallopeptidase activity / pyridoxal phosphate binding / double-strand break repair / mitotic cell cycle / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / chromatin organization / microtubule cytoskeleton / Processing of DNA double-strand break ends / microtubule binding / protein homotetramerization / microtubule / cysteine-type deubiquitinase activity / mitochondrial inner membrane / ciliary basal body / mitochondrial matrix / cell division / apoptotic process / positive regulation of cell population proliferation / DNA damage response / chromatin binding / negative regulation of apoptotic process / signal transduction / mitochondrion / proteolysis / extracellular exosome / nucleoplasm / metal ion binding / identical protein binding / nucleus / 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: 3.8 Å | ||||||
![]() | Walden, M. / Hesketh, E. / Tian, L. / Ranson, N.A. / Greenberg, R.A. / Zeqiraj, E. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Metabolic control of BRISC-SHMT2 assembly regulates immune signalling. 著者: Miriam Walden / Lei Tian / Rebecca L Ross / Upasana M Sykora / Dominic P Byrne / Emma L Hesketh / Safi K Masandi / Joel Cassel / Rachel George / James R Ault / Farid El Oualid / Krzysztof ...著者: Miriam Walden / Lei Tian / Rebecca L Ross / Upasana M Sykora / Dominic P Byrne / Emma L Hesketh / Safi K Masandi / Joel Cassel / Rachel George / James R Ault / Farid El Oualid / Krzysztof Pawłowski / Joseph M Salvino / Patrick A Eyers / Neil A Ranson / Francesco Del Galdo / Roger A Greenberg / Elton Zeqiraj / ![]() ![]() ![]() ![]() ![]() 要旨: Serine hydroxymethyltransferase 2 (SHMT2) regulates one-carbon transfer reactions that are essential for amino acid and nucleotide metabolism, and uses pyridoxal-5'-phosphate (PLP) as a cofactor. ...Serine hydroxymethyltransferase 2 (SHMT2) regulates one-carbon transfer reactions that are essential for amino acid and nucleotide metabolism, and uses pyridoxal-5'-phosphate (PLP) as a cofactor. Apo SHMT2 exists as a dimer with unknown functions, whereas PLP binding stabilizes the active tetrameric state. SHMT2 also promotes inflammatory cytokine signalling by interacting with the deubiquitylating BRCC36 isopeptidase complex (BRISC), although it is unclear whether this function relates to metabolism. Here we present the cryo-electron microscopy structure of the human BRISC-SHMT2 complex at a resolution of 3.8 Å. BRISC is a U-shaped dimer of four subunits, and SHMT2 sterically blocks the BRCC36 active site and inhibits deubiquitylase activity. Only the inactive SHMT2 dimer-and not the active PLP-bound tetramer-binds and inhibits BRISC. Mutations in BRISC that disrupt SHMT2 binding impair type I interferon signalling in response to inflammatory stimuli. Intracellular levels of PLP regulate the interaction between BRISC and SHMT2, as well as inflammatory cytokine responses. These data reveal a mechanism in which metabolites regulate deubiquitylase activity and inflammatory signalling. | ||||||
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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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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: 36119.918 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P46736, 加水分解酵素; プロテアーゼ; ペプチド結合加水分解酵素; オメガペプチターゼ #2: タンパク質 | 分子量: 31033.945 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: Q15018 #3: タンパク質 | 分子量: 56097.902 Da / 分子数: 2 / Mutation: A285T / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #4: タンパク質 | 分子量: 22026.717 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: Q9NXR7 #5: 化合物 | |
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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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分子量 | 値: 388.47 kDa/nm / 実験値: YES | ||||||||||||||||||||||||||||
由来(天然) |
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由来(組換発現) |
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緩衝液 | pH: 7.5 | ||||||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 0.051 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: Specimen contained BRCC36, ABRAXAS2, BRCC45, MERIT40 and SHMT2 macromolecules | ||||||||||||||||||||||||||||
試料支持 | グリッドの材料: COPPER / グリッドのタイプ: Quantifoil R1.2/1.3 | ||||||||||||||||||||||||||||
急速凍結 | 凍結剤: ETHANE / 湿度: 95 % / 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): 75000 X / 最大 デフォーカス(公称値): -1600 nm / 最小 デフォーカス(公称値): -3100 nm / Cs: 2.7 mm / C2レンズ絞り径: 70 µm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 平均露光時間: 2 sec. / 電子線照射量: 1.2 e/Å2 / 検出モード: INTEGRATING フィルム・検出器のモデル: FEI FALCON III (4k x 4k) 撮影したグリッド数: 3 / 実像数: 7494 |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.11.1_2575: / 分類: 精密化 | ||||||||||||||||||||||||||||||
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EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 403499 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: RIGID BODY FIT | ||||||||||||||||||||||||||||||
原子モデル構築 |
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