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基本情報
登録情報 | データベース: PDB / ID: 7crw | |||||||||||||||||||||||||||||||||
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タイトル | Cryo-EM structure of rNLRP1-rDPP9 complex | |||||||||||||||||||||||||||||||||
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![]() | IMMUNE SYSTEM | |||||||||||||||||||||||||||||||||
機能・相同性 | ![]() negative regulation of cellular defense response / NLRP1 inflammasome complex assembly / NLRP1 inflammasome complex / programmed necrotic cell death / NLRP3 inflammasome complex / self proteolysis / positive regulation of pyroptotic inflammatory response / cysteine-type endopeptidase activator activity / dipeptidyl-peptidase IV / dipeptidyl-peptidase activity ...negative regulation of cellular defense response / NLRP1 inflammasome complex assembly / NLRP1 inflammasome complex / programmed necrotic cell death / NLRP3 inflammasome complex / self proteolysis / positive regulation of pyroptotic inflammatory response / cysteine-type endopeptidase activator activity / dipeptidyl-peptidase IV / dipeptidyl-peptidase activity / 加水分解酵素; プロテアーゼ; ペプチド結合加水分解酵素 / negative regulation of programmed cell death / cellular response to UV-B / pattern recognition receptor activity / pyroptotic inflammatory response / cell leading edge / response to muramyl dipeptide / aminopeptidase activity / signaling adaptor activity / antiviral innate immune response / serine-type peptidase activity / activation of innate immune response / intrinsic apoptotic signaling pathway / positive regulation of interleukin-1 beta production / molecular condensate scaffold activity / protein homooligomerization / positive regulation of inflammatory response / peptidase activity / double-stranded RNA binding / double-stranded DNA binding / regulation of inflammatory response / neuron apoptotic process / scaffold protein binding / regulation of apoptotic process / defense response to virus / microtubule / defense response to bacterium / inflammatory response / protein domain specific binding / neuronal cell body / enzyme binding / signal transduction / protein-containing complex / ATP hydrolysis activity / proteolysis / ATP binding / identical protein binding / nucleus / cytosol 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: 3.18 Å | |||||||||||||||||||||||||||||||||
![]() | Huang, M.H. / Zhang, X.X. / Wang, J. / Chai, J.J. | |||||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural and biochemical mechanisms of NLRP1 inhibition by DPP9. 著者: Menghang Huang / Xiaoxiao Zhang / Gee Ann Toh / Qin Gong / Jia Wang / Zhifu Han / Bin Wu / Franklin Zhong / Jijie Chai / ![]() ![]() ![]() 要旨: Nucleotide-binding domain, leucine-rich repeat receptors (NLRs) mediate innate immunity by forming inflammasomes. Activation of the NLR protein NLRP1 requires autocleavage within its function-to-find ...Nucleotide-binding domain, leucine-rich repeat receptors (NLRs) mediate innate immunity by forming inflammasomes. Activation of the NLR protein NLRP1 requires autocleavage within its function-to-find domain (FIIND). In resting cells, the dipeptidyl peptidases DPP8 and DPP9 interact with the FIIND of NLRP1 and suppress spontaneous NLRP1 activation; however, the mechanisms through which this occurs remain unknown. Here we present structural and biochemical evidence that full-length rat NLRP1 (rNLRP1) and rat DPP9 (rDPP9) form a 2:1 complex that contains an autoinhibited rNLRP1 molecule and an active UPA-CARD fragment of rNLRP1. The ZU5 domain is required not only for autoinhibition of rNLRP1 but also for assembly of the 2:1 complex. Formation of the complex prevents UPA-mediated higher-order oligomerization of UPA-CARD fragments and strengthens ZU5-mediated NLRP1 autoinhibition. Structure-guided biochemical and functional assays show that both NLRP1 binding and enzymatic activity are required for DPP9 to suppress NLRP1 in human cells. Together, our data reveal the mechanism of DPP9-mediated inhibition of NLRP1 and shed light on the activation of the NLRP1 inflammasome. | |||||||||||||||||||||||||||||||||
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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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ダウンロードとリンク
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PDBx/mmCIF形式 | ![]() | 409.2 KB | 表示 | ![]() |
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PDB形式 | ![]() | 308.1 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 771.6 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 798.6 KB | 表示 | |
XML形式データ | ![]() | 56.9 KB | 表示 | |
CIF形式データ | ![]() | 86.8 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-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: 98203.273 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: M0R781 #2: タンパク質 | 分子量: 138577.859 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: D9I2G3 Has protein modification | N | |
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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 | 名称: Complex of Nlrp1-FIIND with DPP9 dimer / 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: 8 |
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 |
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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 |
撮影 | 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.15.1_3469: / 分類: 精密化 | ||||||||||||||||||||||||
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EMソフトウェア | 名称: PHENIX / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.18 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 182116 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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