- EMDB-29493: Cryo-EM structure of human Needle/NAIP/NLRC4 (R288A) -
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基本情報
登録情報
データベース: EMDB / ID: EMD-29493
タイトル
Cryo-EM structure of human Needle/NAIP/NLRC4 (R288A)
マップデータ
試料
複合体: the complex of Needle, human NAIP and NLRC4
複合体: human NAIP and NLRC4
タンパク質・ペプチド: Baculoviral IAP repeat-containing protein 1
タンパク質・ペプチド: NLR family CARD domain-containing protein 4
複合体: Burkholderia Needle (chimeric with an anthrax toxin lethal factor tag)
タンパク質・ペプチド: Lethal factor,Type III secretion system protein
リガンド: ADENOSINE-5'-TRIPHOSPHATE
リガンド: ZINC ION
キーワード
NLRC4 / NAIP / Inflammasome / IMMUNE SYSTEM
機能・相同性
機能・相同性情報
anthrax lethal factor endopeptidase / IPAF inflammasome complex / The IPAF inflammasome / icosanoid biosynthetic process / canonical inflammasome complex / type III protein secretion system complex / positive regulation of protein processing / caspase binding / protein secretion by the type III secretion system / activation of cysteine-type endopeptidase activity ...anthrax lethal factor endopeptidase / IPAF inflammasome complex / The IPAF inflammasome / icosanoid biosynthetic process / canonical inflammasome complex / type III protein secretion system complex / positive regulation of protein processing / caspase binding / protein secretion by the type III secretion system / activation of cysteine-type endopeptidase activity / pattern recognition receptor signaling pathway / host cell cytosol / cysteine-type endopeptidase inhibitor activity / TP53 Regulates Transcription of Caspase Activators and Caspases / pyroptotic inflammatory response / cysteine-type endopeptidase inhibitor activity involved in apoptotic process / Uptake and function of anthrax toxins / endopeptidase activator activity / negative regulation of tumor necrosis factor-mediated signaling pathway / detection of bacterium / protein serine/threonine kinase binding / activation of innate immune response / : / positive regulation of interleukin-1 beta production / positive regulation of JNK cascade / protein homooligomerization / metalloendopeptidase activity / positive regulation of inflammatory response / metallopeptidase activity / positive regulation of NF-kappaB transcription factor activity / nervous system development / toxin activity / basolateral plasma membrane / regulation of apoptotic process / negative regulation of neuron apoptotic process / defense response to bacterium / inflammatory response / positive regulation of apoptotic process / intracellular membrane-bounded organelle / innate immune response / negative regulation of apoptotic process / apoptotic process / magnesium ion binding / cell surface / protein homodimerization activity / ATP hydrolysis activity / proteolysis / zinc ion binding / extracellular region / ATP binding / identical protein binding / metal ion binding / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能
Baculoviral IAP repeat-containing protein 1 / NLR family CARD domain-containing protein 4 / NLRC4, helical domain / : / NLRC4 helical domain / Nlrc4-like, winged helix domain / Anthrax toxin lethal factor, central domain / Anthrax toxin lethal factor, middle domain / Type III secretion, needle-protein-like / Type III secretion, needle-protein-like superfamily ...Baculoviral IAP repeat-containing protein 1 / NLR family CARD domain-containing protein 4 / NLRC4, helical domain / : / NLRC4 helical domain / Nlrc4-like, winged helix domain / Anthrax toxin lethal factor, central domain / Anthrax toxin lethal factor, middle domain / Type III secretion, needle-protein-like / Type III secretion, needle-protein-like superfamily / Type III secretion needle MxiH, YscF, SsaG, EprI, PscF, EscF / Type III secretion system, needle protein / Anthrax toxin, lethal/endema factor / Anthrax toxin, lethal/endema factor, N-/C-terminal / : / Anthrax toxin lethal factor, N- and C-terminal domain / Anthrax toxin lethal factor (ATLF)-like domain profile. / NACHT nucleoside triphosphatase / NACHT domain / NACHT-NTPase domain profile. / BIR repeat. / BIR repeat / Inhibitor of Apoptosis domain / BIR repeat profile. / Baculoviral inhibition of apoptosis protein repeat / CARD domain / CARD caspase recruitment domain profile. / Caspase recruitment domain / Metallopeptidase, catalytic domain superfamily / Death-like domain superfamily / Leucine-rich repeat domain superfamily / Neutral zinc metallopeptidases, zinc-binding region signature. / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
Lethal factor / Baculoviral IAP repeat-containing protein 1 / Type III secretion system protein / NLR family CARD domain-containing protein 4 類似検索 - 構成要素
生物種
Homo sapiens (ヒト) / Bacillus anthracis (炭疽菌) / Burkholderia (バクテリア)
ジャーナル: Nat Struct Mol Biol / 年: 2024 タイトル: Structural basis of the human NAIP/NLRC4 inflammasome assembly and pathogen sensing. 著者: Rosalie E Matico / Xiaodi Yu / Robyn Miller / Sandeep Somani / M Daniel Ricketts / Nikit Kumar / Ruth A Steele / Quintus Medley / Scott Berger / Benjamin Faustin / Sujata Sharma / 要旨: The NLR family caspase activation and recruitment domain-containing 4 (NLRC4) inflammasome is a critical cytosolic innate immune machine formed upon the direct sensing of bacterial infection and in ...The NLR family caspase activation and recruitment domain-containing 4 (NLRC4) inflammasome is a critical cytosolic innate immune machine formed upon the direct sensing of bacterial infection and in response to cell stress during sterile chronic inflammation. Despite its major role in instigating the subsequent host immune response, a more complete understanding of the molecular events in the formation of the NLRC4 inflammasome in humans is lacking. Here we identify Bacillus thailandensis type III secretion system needle protein (Needle) as a potent trigger of the human NLR family apoptosis inhibitory protein (NAIP)/NLRC4 inflammasome complex formation and determine its structural features by cryogenic electron microscopy. We also provide a detailed understanding of how type III secretion system pathogen components are sensed by human NAIP to form a cascade of NLRC4 protomer through a critical lasso-like motif, a 'lock-key' activation model and large structural rearrangement, ultimately forming the full human NLRC4 inflammasome. These results shed light on key regulatory mechanisms specific to the NLRC4 inflammasome assembly, and the innate immune modalities of pathogen sensing in humans.