FADD-DED filaments coordinate complex IIa assembly during TNF-induced apoptosis
要素
FAS-associated death domain protein
キーワード
IMMUNE SYSTEM / RNA recognition / RNA helicase / ATP hydrolysis / RLR signaling
機能・相同性
機能・相同性情報
positive regulation of CD8-positive, alpha-beta cytotoxic T cell extravasation / negative regulation of activation-induced cell death of T cells / death effector domain binding / tumor necrosis factor receptor superfamily binding / FasL/ CD95L signaling / TRAIL signaling / CD95 death-inducing signaling complex / death-inducing signaling complex assembly / Defective RIPK1-mediated regulated necrosis / TRAIL-activated apoptotic signaling pathway ...positive regulation of CD8-positive, alpha-beta cytotoxic T cell extravasation / negative regulation of activation-induced cell death of T cells / death effector domain binding / tumor necrosis factor receptor superfamily binding / FasL/ CD95L signaling / TRAIL signaling / CD95 death-inducing signaling complex / death-inducing signaling complex assembly / Defective RIPK1-mediated regulated necrosis / TRAIL-activated apoptotic signaling pathway / ripoptosome / caspase binding / TRIF-mediated programmed cell death / Regulation by c-FLIP / CASP8 activity is inhibited / Dimerization of procaspase-8 / TLR3-mediated TICAM1-dependent programmed cell death / Caspase activation via Death Receptors in the presence of ligand / positive regulation of macrophage differentiation / positive regulation of adaptive immune response / necroptotic signaling pathway / NF-kB activation through FADD/RIP-1 pathway mediated by caspase-8 and -10 / death-inducing signaling complex / negative regulation of necroptotic process / receptor serine/threonine kinase binding / positive regulation of type I interferon-mediated signaling pathway / tumor necrosis factor receptor binding / positive regulation of innate immune response / death receptor binding / positive regulation of activated T cell proliferation / motor neuron apoptotic process / TNFR1-induced proapoptotic signaling / positive regulation of extrinsic apoptotic signaling pathway / RIPK1-mediated regulated necrosis / T cell homeostasis / positive regulation of proteolysis / extrinsic apoptotic signaling pathway via death domain receptors / lymph node development / positive regulation of execution phase of apoptosis / spleen development / extrinsic apoptotic signaling pathway / extrinsic apoptotic signaling pathway in absence of ligand / behavioral response to cocaine / signaling adaptor activity / thymus development / positive regulation of interleukin-8 production / apoptotic signaling pathway / kidney development / Regulation of TNFR1 signaling / cellular response to mechanical stimulus / positive regulation of T cell mediated cytotoxicity / Regulation of necroptotic cell death / cytoplasmic side of plasma membrane / positive regulation of type II interferon production / positive regulation of tumor necrosis factor production / T cell differentiation in thymus / cell body / protease binding / defense response to virus / protein-macromolecule adaptor activity / positive regulation of canonical NF-kappaB signal transduction / positive regulation of apoptotic process / innate immune response / apoptotic process / protein-containing complex binding / positive regulation of transcription by RNA polymerase II / identical protein binding / plasma membrane / cytoplasm / cytosol 類似検索 - 分子機能
FADD / : / Death effector domain / Death effector domain / Death effector domain (DED) profile. / Death effector domain / Death domain profile. / DEATH domain, found in proteins involved in cell death (apoptosis). / Death domain / Death domain / Death-like domain superfamily 類似検索 - ドメイン・相同性
ジャーナル: Proc Natl Acad Sci U S A / 年: 2025 タイトル: DED filaments coordinate complex IIa assembly during TNF-induced apoptosis. 著者: Ying Chen / Vinh Thang Huynh / Lihua Lai / Ping Liu / Tongyang Li / Yaw Bia Tan / Che Shin Chew / Amhed Missael Vargas Velazquez / Firdaus Samsudin / Jan K Marzinek / Peter J Bond / Bin Wu / ...著者: Ying Chen / Vinh Thang Huynh / Lihua Lai / Ping Liu / Tongyang Li / Yaw Bia Tan / Che Shin Chew / Amhed Missael Vargas Velazquez / Firdaus Samsudin / Jan K Marzinek / Peter J Bond / Bin Wu / Dahai Luo / Vinay Tergaonkar / 要旨: Extrinsic apoptosis is initiated by signaling from death receptors, leading to the assembly of RIPK1, FADD, and caspase-8 complex. Subsequently, caspase-8 forms a filamentous structure through the ...Extrinsic apoptosis is initiated by signaling from death receptors, leading to the assembly of RIPK1, FADD, and caspase-8 complex. Subsequently, caspase-8 forms a filamentous structure through the oligomerization of its tandem death effector domain (tDED), resulting in caspase activation and cell death. Although the DED of FADD (DED) is homologous to the tDEDs of caspase-8 (tDED) and both oligomerize to function, the functional form of DED oligomer in extrinsic apoptosis remains unclear. Here, using cryogenic-electron microscopy, we elucidate the structure of DED filaments comprising three helical chains assembled through three types of iterative interactions. Mutations disrupting DED filament formation impair the recruitment of RIPK1 and caspase-8, and abrogate the cell death response, suggesting that DED filamentation represents an important mechanistic step in the initiation of TNF-induced extrinsic apoptosis. Contrary to the belief that the homotypic death domains of RIPK1 and FADD are solely responsible for their interaction, we here show this interaction requires DED filamentation. Furthermore, cFLIP can disrupt DED filaments, uncovering an additional antiapoptotic mechanism of cFLIP beyond its disruption of caspase-8 filament. Molecular dynamics simulations reveal that DED filament thermodynamically favors tDED monomer over DED monomer, thus explaining the hierarchy and stoichiometry of FADD/caspase-8 complex assembly. These findings highlight the hitherto unappreciated roles of DED filament formation in extrinsic apoptosis.
履歴
登録
2025年3月23日
登録サイト: PDBJ / 処理サイト: PDBJ
改定 1.0
2025年8月20日
Provider: repository / タイプ: Initial release
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2025年8月20日
Data content type: EM metadata / Data content type: EM metadata / Provider: repository / タイプ: Initial release
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2025年8月20日
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2025年8月20日
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2025年8月20日
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改定 1.0
2025年8月20日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
B: FAS-associated death domain protein C: FAS-associated death domain protein D: FAS-associated death domain protein E: FAS-associated death domain protein F: FAS-associated death domain protein G: FAS-associated death domain protein H: FAS-associated death domain protein I: FAS-associated death domain protein J: FAS-associated death domain protein K: FAS-associated death domain protein L: FAS-associated death domain protein M: FAS-associated death domain protein N: FAS-associated death domain protein O: FAS-associated death domain protein P: FAS-associated death domain protein Q: FAS-associated death domain protein R: FAS-associated death domain protein S: FAS-associated death domain protein T: FAS-associated death domain protein U: FAS-associated death domain protein V: FAS-associated death domain protein W: FAS-associated death domain protein X: FAS-associated death domain protein Y: FAS-associated death domain protein
... FAS-associateddeathdomainprotein / FAS-associating death domain-containing protein / Growth-inhibiting gene 3 protein / Mediator of ...FAS-associating death domain-containing protein / Growth-inhibiting gene 3 protein / Mediator of receptor induced toxicity