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基本情報
登録情報 | データベース: PDB / ID: 8ej4 | ||||||
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タイトル | Cryo-EM structure of the active NLRP3 inflammasome disk | ||||||
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![]() | Immune System/Transferase / Inflammasome / CYTOSOLIC PROTEIN / Immune System-Transferase complex | ||||||
機能・相同性 | ![]() NEK6-subfamily protein kinase / detection of biotic stimulus / molecular sensor activity / phosphatidylinositol phosphate binding / Activation of NIMA Kinases NEK9, NEK6, NEK7 / positive regulation of T-helper 2 cell differentiation / NLRP3 inflammasome complex assembly / positive regulation of T-helper 2 cell cytokine production / interphase microtubule organizing center / positive regulation of type 2 immune response ...NEK6-subfamily protein kinase / detection of biotic stimulus / molecular sensor activity / phosphatidylinositol phosphate binding / Activation of NIMA Kinases NEK9, NEK6, NEK7 / positive regulation of T-helper 2 cell differentiation / NLRP3 inflammasome complex assembly / positive regulation of T-helper 2 cell cytokine production / interphase microtubule organizing center / positive regulation of type 2 immune response / NLRP3 inflammasome complex / Nuclear Pore Complex (NPC) Disassembly / cysteine-type endopeptidase activator activity / peptidoglycan binding / cellular response to potassium ion / osmosensory signaling pathway / phosphatidylinositol-4-phosphate binding / negative regulation of non-canonical NF-kappaB signal transduction / pattern recognition receptor signaling pathway / negative regulation of interleukin-1 beta production / positive regulation of NLRP3 inflammasome complex assembly / pyroptotic inflammatory response / positive regulation of interleukin-4 production / positive regulation of telomere maintenance / microtubule organizing center / negative regulation of acute inflammatory response / The NLRP3 inflammasome / Purinergic signaling in leishmaniasis infection / spindle assembly / signaling adaptor activity / EML4 and NUDC in mitotic spindle formation / protein maturation / regulation of mitotic cell cycle / molecular function activator activity / positive regulation of interleukin-1 beta production / molecular condensate scaffold activity / defense response / positive regulation of non-canonical NF-kappaB signal transduction / Cytoprotection by HMOX1 / ADP binding / protein homooligomerization / cellular response to virus / 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 / negative regulation of inflammatory response / Metalloprotease DUBs / positive regulation of inflammatory response / spindle pole / positive regulation of NF-kappaB transcription factor activity / SARS-CoV-1 activates/modulates innate immune responses / cellular response to lipopolysaccharide / regulation of inflammatory response / protein-macromolecule adaptor activity / DNA-binding transcription factor binding / molecular adaptor activity / sequence-specific DNA binding / microtubule / eukaryotic translation initiation factor 2alpha kinase activity / 3-phosphoinositide-dependent protein kinase activity / DNA-dependent protein kinase activity / ribosomal protein S6 kinase activity / histone H3S10 kinase activity / histone H2AXS139 kinase activity / histone H3S28 kinase activity / histone H4S1 kinase activity / histone H2BS14 kinase activity / histone H3T3 kinase activity / histone H2AS121 kinase activity / Rho-dependent protein serine/threonine kinase activity / histone H2BS36 kinase activity / histone H3S57 kinase activity / histone H2AT120 kinase activity / AMP-activated protein kinase activity / histone H2AS1 kinase activity / histone H3T6 kinase activity / histone H3T11 kinase activity / histone H3T45 kinase activity / protein phosphorylation / inflammatory response / Golgi membrane / innate immune response / protein serine kinase activity / protein serine/threonine kinase activity / apoptotic process / centrosome / SARS-CoV-2 activates/modulates innate and adaptive immune responses / endoplasmic reticulum / signal transduction / positive regulation of transcription by RNA polymerase II / ATP hydrolysis activity / mitochondrion / extracellular region / nucleoplasm / ATP binding / metal ion binding / identical protein binding / nucleus / membrane / 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: 3.4 Å | ||||||
![]() | Hao, W. / Le, X. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Cryo-EM structures of the active NLRP3 inflammasome disc. 著者: Le Xiao / Venkat Giri Magupalli / Hao Wu / ![]() 要旨: Inflammasomes are cytosolic innate immune complexes that activate caspase-1 following detection of pathogenic and endogenous dangers, and NACHT-, leucine-rich repeat (LRR)- and pyrin domain (PYD)- ...Inflammasomes are cytosolic innate immune complexes that activate caspase-1 following detection of pathogenic and endogenous dangers, and NACHT-, leucine-rich repeat (LRR)- and pyrin domain (PYD)-containing protein 3 (NLRP3) is an inflammasome sensor of membrane damage highly important in regard to the induction of inflammation. Here we report cryogenic electron microscopy structures of disc-shaped active NLRP3 oligomers in complex with adenosine 5'-O-(3-thio)triphosphate, the centrosomal NIMA-related kinase 7 (NEK7) and the adaptor protein ASC, which recruits caspase-1. In these NLRP3-NEK7-ASC complexes, the central NACHT domain of NLRP3 assumes an ATP-bound conformation in which two of its subdomains rotate by about 85° relative to the ADP-bound inactive conformation. The fish-specific NACHT-associated domain conserved in NLRP3 but absent in most NLRPs becomes ordered in its key regions to stabilize the active NACHT conformation and mediate most interactions in the disc. Mutations on these interactions compromise NLRP3-mediated caspase-1 activation. The N-terminal PYDs from all NLRP3 subunits combine to form a PYD filament that recruits ASC PYD to elicit downstream signalling. Surprisingly, the C-terminal LRR domain and the LRR-bound NEK7 do not participate in disc interfaces. Together with previous structures of an inactive NLRP3 cage in which LRR-LRR interactions play an important role, we propose that the role of NEK7 is to break the inactive cage to transform NLRP3 into the active NLRP3 inflammasome disc. | ||||||
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構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 2.1 MB | 表示 | ![]() |
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-関連構造データ
関連構造データ | ![]() 28175MC ![]() 8ertC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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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: 102675.570 Da / 分子数: 10 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() #2: タンパク質 | 分子量: 32038.203 Da / 分子数: 10 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() 参照: UniProt: Q8TDX7, non-specific serine/threonine protein kinase #3: 化合物 | ChemComp-AGS / #4: 化合物 | ChemComp-MG / 研究の焦点であるリガンドがあるか | Y | |
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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: a complex of NLRP3 and NEK7 / タイプ: COMPLEX / Entity ID: #1-#2 / 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 / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 1000 nm |
撮影 | 電子線照射量: 50 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
CTF補正 | タイプ: NONE |
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3次元再構成 | 解像度: 3.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 51576 / 対称性のタイプ: POINT |