+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-30785 | |||||||||
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Title | K63-polyUb MDA5CARDs complex | |||||||||
Map data | ||||||||||
Sample |
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Keywords | signaling complex / IMMUNE SYSTEM | |||||||||
Function / homology | Function and homology information MDA-5 signaling pathway / regulation of type III interferon production / detection of virus / NF-kB activation through FADD/RIP-1 pathway mediated by caspase-8 and -10 / positive regulation of response to cytokine stimulus / hypothalamus gonadotrophin-releasing hormone neuron development / female meiosis I / positive regulation of protein monoubiquitination / mitochondrion transport along microtubule / pattern recognition receptor activity ...MDA-5 signaling pathway / regulation of type III interferon production / detection of virus / NF-kB activation through FADD/RIP-1 pathway mediated by caspase-8 and -10 / positive regulation of response to cytokine stimulus / hypothalamus gonadotrophin-releasing hormone neuron development / female meiosis I / positive regulation of protein monoubiquitination / mitochondrion transport along microtubule / pattern recognition receptor activity / fat pad development / TRAF6 mediated IRF7 activation / cytoplasmic pattern recognition receptor signaling pathway / negative regulation of viral genome replication / type I interferon-mediated signaling pathway / female gonad development / cellular response to exogenous dsRNA / seminiferous tubule development / male meiosis I / positive regulation of interferon-alpha production / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / TRAF6 mediated NF-kB activation / protein sumoylation / ribonucleoprotein complex binding / regulation of neuron apoptotic process / regulation of proteasomal protein catabolic process / antiviral innate immune response / energy homeostasis / Maturation of protein E / Maturation of protein E / ER Quality Control Compartment (ERQC) / Myoclonic epilepsy of Lafora / IRAK2 mediated activation of TAK1 complex / Alpha-protein kinase 1 signaling pathway / FLT3 signaling by CBL mutants / IRAK1 recruits IKK complex / IRAK1 recruits IKK complex upon TLR7/8 or 9 stimulation / Prevention of phagosomal-lysosomal fusion / Glycogen synthesis / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / Endosomal Sorting Complex Required For Transport (ESCRT) / TICAM1,TRAF6-dependent induction of TAK1 complex / Membrane binding and targetting of GAG proteins / Regulation of TBK1, IKKε-mediated activation of IRF3, IRF7 upon TLR3 ligation / Negative regulation of FLT3 / Constitutive Signaling by NOTCH1 HD Domain Mutants / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Regulation of FZD by ubiquitination / TICAM1-dependent activation of IRF3/IRF7 / positive regulation of interferon-beta production / NOTCH2 Activation and Transmission of Signal to the Nucleus / p75NTR recruits signalling complexes / APC/C:Cdc20 mediated degradation of Cyclin B / Downregulation of ERBB4 signaling / TRAF6-mediated induction of TAK1 complex within TLR4 complex / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / APC-Cdc20 mediated degradation of Nek2A / Regulation of innate immune responses to cytosolic DNA / NF-kB is activated and signals survival / InlA-mediated entry of Listeria monocytogenes into host cells / Regulation of pyruvate metabolism / VLDLR internalisation and degradation / Downregulation of ERBB2:ERBB3 signaling / NRIF signals cell death from the nucleus / Pexophagy / Activated NOTCH1 Transmits Signal to the Nucleus / Regulation of PTEN localization / Regulation of BACH1 activity / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / TICAM1, RIP1-mediated IKK complex recruitment / Translesion synthesis by REV1 / MAP3K8 (TPL2)-dependent MAPK1/3 activation / Translesion synthesis by POLK / neuron projection morphogenesis / Downregulation of TGF-beta receptor signaling / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / Translesion synthesis by POLI / PINK1-PRKN Mediated Mitophagy / IKK complex recruitment mediated by RIP1 / Regulation of activated PAK-2p34 by proteasome mediated degradation / JNK (c-Jun kinases) phosphorylation and activation mediated by activated human TAK1 / Gap-filling DNA repair synthesis and ligation in GG-NER / Josephin domain DUBs / InlB-mediated entry of Listeria monocytogenes into host cell / regulation of mitochondrial membrane potential / TGF-beta receptor signaling in EMT (epithelial to mesenchymal transition) / positive regulation of protein ubiquitination / TNFR1-induced NF-kappa-B signaling pathway / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / Autodegradation of Cdh1 by Cdh1:APC/C / APC/C:Cdc20 mediated degradation of Securin / Regulation of NF-kappa B signaling / SCF-beta-TrCP mediated degradation of Emi1 / Asymmetric localization of PCP proteins / TCF dependent signaling in response to WNT / NIK-->noncanonical NF-kB signaling / Ubiquitin-dependent degradation of Cyclin D / AUF1 (hnRNP D0) binds and destabilizes mRNA / activated TAK1 mediates p38 MAPK activation Similarity search - Function | |||||||||
Biological species | Homo sapiens (human) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.3 Å | |||||||||
Authors | Song B / Chen Y | |||||||||
Funding support | China, 1 items
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Citation | Journal: Immunity / Year: 2021 Title: Ordered assembly of the cytosolic RNA-sensing MDA5-MAVS signaling complex via binding to unanchored K63-linked poly-ubiquitin chains. Authors: Bin Song / Yun Chen / Xin Liu / Fei Yuan / Eddie Yong Jun Tan / Yixuan Lei / Ning Song / Yinqi Han / Bruce D Pascal / Patrick R Griffin / Cheng Luo / Bin Wu / Dahai Luo / Jie Zheng / Abstract: The RNA sensor MDA5 recruits the signaling adaptor MAVS to initiate type I interferon signaling and downstream antiviral responses, a process that requires K63-linked polyubiquitin chains. Here, we ...The RNA sensor MDA5 recruits the signaling adaptor MAVS to initiate type I interferon signaling and downstream antiviral responses, a process that requires K63-linked polyubiquitin chains. Here, we examined the mechanisms whereby K63-polyUb chain regulate MDA5 activation. Only long unanchored K63-polyUb (n ≥ 8) could mediate tetramerization of the caspase activation and recruitment domains of MDA5 (CARDs). Cryoelectron microscopy structures of a polyUb-bound CARDs tetramer and a polyUb-bound CARDs-CARD assembly revealed a tower-like formation, wherein eight Ubs tethered along the outer rim of the helical shell, bridging CARDs and CARD tetramers into proximity. ATP binding and hydrolysis promoted the stabilization of RNA-bound MDA5 prior to MAVS activation via allosteric effects on CARDs-polyUb complex. Abundant ATP prevented basal activation of apo MDA5. Our findings reveal the ordered assembly of a MDA5 signaling complex competent to recruit and activate MAVS and highlight differences with RIG-I in terms of CARD orientation and Ub sensing that suggest different abilities to induce antiviral responses. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_30785.map.gz | 36 MB | EMDB map data format | |
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Header (meta data) | emd-30785-v30.xml emd-30785.xml | 11.5 KB 11.5 KB | Display Display | EMDB header |
Images | emd_30785.png | 273.6 KB | ||
Filedesc metadata | emd-30785.cif.gz | 5 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-30785 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-30785 | HTTPS FTP |
-Validation report
Summary document | emd_30785_validation.pdf.gz | 533 KB | Display | EMDB validaton report |
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Full document | emd_30785_full_validation.pdf.gz | 532.6 KB | Display | |
Data in XML | emd_30785_validation.xml.gz | 6 KB | Display | |
Data in CIF | emd_30785_validation.cif.gz | 6.8 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-30785 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-30785 | HTTPS FTP |
-Related structure data
Related structure data | 7dnjMC 7dniC M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_30785.map.gz / Format: CCP4 / Size: 38.4 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.045 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
-Entire : k63polyUb bound MDA5 CARDs complex
Entire | Name: k63polyUb bound MDA5 CARDs complex |
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Components |
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-Supramolecule #1: k63polyUb bound MDA5 CARDs complex
Supramolecule | Name: k63polyUb bound MDA5 CARDs complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: Homo sapiens (human) |
-Supramolecule #2: k63polyUb
Supramolecule | Name: k63polyUb / type: complex / ID: 2 / Parent: 1 / Macromolecule list: all |
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Source (natural) | Organism: Homo sapiens (human) |
-Supramolecule #3: MDA5 CARDs
Supramolecule | Name: MDA5 CARDs / type: complex / ID: 3 / Parent: 1 / Macromolecule list: all |
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-Macromolecule #1: Interferon-induced helicase C domain-containing protein 1
Macromolecule | Name: Interferon-induced helicase C domain-containing protein 1 type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO / EC number: RNA helicase |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 23.825883 KDa |
Recombinant expression | Organism: Escherichia coli (E. coli) |
Sequence | String: MSNGYSTDEN FRYLISCFRA RVKMYIQVEP VLDYLTFLPA EVKEQIQRTV ATSGNMQAVE LLLSTLEKGV WHLGWTREFV EALRRTGSP LAARYMNPEL TDLPSPSFEN AHDEYLQLLN LLQPTLVDKL LVRDVLDKCM EEELLTIEDR NRIAAAENNG N ESGVRELL ...String: MSNGYSTDEN FRYLISCFRA RVKMYIQVEP VLDYLTFLPA EVKEQIQRTV ATSGNMQAVE LLLSTLEKGV WHLGWTREFV EALRRTGSP LAARYMNPEL TDLPSPSFEN AHDEYLQLLN LLQPTLVDKL LVRDVLDKCM EEELLTIEDR NRIAAAENNG N ESGVRELL KRIVQKENWF SAFLNVLRQT GNNELVQELT GSDCSESNAE UniProtKB: Interferon-induced helicase C domain-containing protein 1 |
-Macromolecule #2: Ubiquitin
Macromolecule | Name: Ubiquitin / type: protein_or_peptide / ID: 2 / Number of copies: 8 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 8.576831 KDa |
Recombinant expression | Organism: Escherichia coli (E. coli) |
Sequence | String: MQIFVKTLTG KTITLEVEPS DTIENVKAKI QDKEGIPPDQ QRLIFAGKQL EDGRTLSDYN IQKESTLHLV LRLRGG UniProtKB: Polyubiquitin-B |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Concentration | 0.8 mg/mL |
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Buffer | pH: 7.5 |
Vitrification | Cryogen name: OTHER |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 70.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: OTHER / Imaging mode: BRIGHT FIELD |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: NONE |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 143814 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |