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- EMDB-15415: Vaccinia C16 protein bound to Ku70/Ku80 -

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Basic information

Entry
Database: EMDB / ID: EMD-15415
TitleVaccinia C16 protein bound to Ku70/Ku80
Map dataMap of C16 C-terminal domains bound to Ku70/Ku80
Sample
  • Complex: Vaccinia C16 protein bound to Ku70/Ku80
    • Protein or peptide: X-ray repair cross-complementing protein 6
    • Protein or peptide: X-ray repair cross-complementing protein 5
    • Protein or peptide: Protein C10
KeywordsC16 vaccinia virus protein Ku70/Ku80 DNA binding inhibition / VIRAL PROTEIN
Function / homology
Function and homology information


Ku70:Ku80 complex / negative regulation of t-circle formation / DNA end binding / small-subunit processome assembly / positive regulation of lymphocyte differentiation / DNA-dependent protein kinase complex / DNA-dependent protein kinase-DNA ligase 4 complex / cellular response to X-ray / nonhomologous end joining complex / : ...Ku70:Ku80 complex / negative regulation of t-circle formation / DNA end binding / small-subunit processome assembly / positive regulation of lymphocyte differentiation / DNA-dependent protein kinase complex / DNA-dependent protein kinase-DNA ligase 4 complex / cellular response to X-ray / nonhomologous end joining complex / : / regulation of smooth muscle cell proliferation / nuclear telomere cap complex / double-strand break repair via classical nonhomologous end joining / Cytosolic sensors of pathogen-associated DNA / IRF3-mediated induction of type I IFN / recombinational repair / regulation of telomere maintenance / U3 snoRNA binding / protein localization to chromosome, telomeric region / cellular response to fatty acid / cellular hyperosmotic salinity response / positive regulation of neurogenesis / telomeric DNA binding / 2-LTR circle formation / hematopoietic stem cell proliferation / site of DNA damage / Lyases; Carbon-oxygen lyases; Other carbon-oxygen lyases / 5'-deoxyribose-5-phosphate lyase activity / hematopoietic stem cell differentiation / ATP-dependent activity, acting on DNA / positive regulation of protein kinase activity / telomere maintenance via telomerase / DNA helicase activity / telomere maintenance / activation of innate immune response / enzyme activator activity / cyclin binding / cellular response to leukemia inhibitory factor / neurogenesis / small-subunit processome / Nonhomologous End-Joining (NHEJ) / protein-DNA complex / cellular response to gamma radiation / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / double-strand break repair via nonhomologous end joining / double-strand break repair / double-stranded DNA binding / scaffold protein binding / secretory granule lumen / DNA recombination / transcription regulator complex / ficolin-1-rich granule lumen / damaged DNA binding / chromosome, telomeric region / transcription cis-regulatory region binding / response to xenobiotic stimulus / ribonucleoprotein complex / innate immune response / negative regulation of DNA-templated transcription / ubiquitin protein ligase binding / DNA damage response / Neutrophil degranulation / protein-containing complex binding / nucleolus / positive regulation of DNA-templated transcription / positive regulation of transcription by RNA polymerase II / protein-containing complex / ATP hydrolysis activity / DNA binding / RNA binding / extracellular region / nucleoplasm / ATP binding / nucleus / membrane / plasma membrane / cytosol
Similarity search - Function
Poxvirus C4/C10 / Poxvirus C4/C10 protein / Ku70, bridge and pillars domain superfamily / : / Ku70 / Ku, C-terminal / Ku, C-terminal domain superfamily / Ku C terminal domain like / Ku80 / Ku70/Ku80 C-terminal arm ...Poxvirus C4/C10 / Poxvirus C4/C10 protein / Ku70, bridge and pillars domain superfamily / : / Ku70 / Ku, C-terminal / Ku, C-terminal domain superfamily / Ku C terminal domain like / Ku80 / Ku70/Ku80 C-terminal arm / Ku70/Ku80 C-terminal arm / Ku70/Ku80, N-terminal alpha/beta / Ku70/Ku80 beta-barrel domain / Ku70/Ku80 N-terminal alpha/beta domain / Ku70 and Ku80 are 70kDa and 80kDa subunits of the Lupus Ku autoantigen / Ku70/Ku80 beta-barrel domain / SPOC-like, C-terminal domain superfamily / SAP domain superfamily / SAP domain / SAP motif profile. / Putative DNA-binding (bihelical) motif predicted to be involved in chromosomal organisation / SAP domain / von Willebrand factor (vWF) type A domain / von Willebrand factor, type A / von Willebrand factor A-like domain superfamily
Similarity search - Domain/homology
Protein C10 / X-ray repair cross-complementing protein 6 / X-ray repair cross-complementing protein 5
Similarity search - Component
Biological speciesHomo sapiens (human) / Vaccinia virus Western Reserve
Methodsingle particle reconstruction / cryo EM / Resolution: 2.46 Å
AuthorsRivera-Calzada A / Arribas-Bosacoma R / Pearl LH / Llorca O
Funding support Spain, United Kingdom, 6 items
OrganizationGrant numberCountry
Agencia Estatal de Investigacion (AEI)AEI/10.13039/501100011033 Spain
Ministerio de Ciencia e Innovacion (MCIN)PID2020-114429RB-I00 Spain
Autonomous Community of MadridY2018/BIO-4747 Spain
Autonomous Community of MadridP2018/NMT-4443 Spain
Cancer Research UKC302/A14532 United Kingdom
Cancer Research UKC302/A24386 United Kingdom
CitationJournal: Nat Commun / Year: 2022
Title: Structural basis for the inactivation of cytosolic DNA sensing by the vaccinia virus.
Authors: Angel Rivera-Calzada / Raquel Arribas-Bosacoma / Alba Ruiz-Ramos / Paloma Escudero-Bravo / Jasminka Boskovic / Rafael Fernandez-Leiro / Antony W Oliver / Laurence H Pearl / Oscar Llorca /
Abstract: Detection of cytosolic DNA is a central element of the innate immunity system against viral infection. The Ku heterodimer, a component of the NHEJ pathway of DNA repair in the nucleus, functions as ...Detection of cytosolic DNA is a central element of the innate immunity system against viral infection. The Ku heterodimer, a component of the NHEJ pathway of DNA repair in the nucleus, functions as DNA sensor that detects dsDNA of viruses that replicate in the cytoplasm. Vaccinia virus expresses two proteins, C4 and C16, that inactivate DNA sensing and enhance virulence. The structural basis for this is unknown. Here we determine the structure of the C16 - Ku complex using cryoEM. Ku binds dsDNA by a preformed ring but C16 sterically blocks this access route, abrogating binding to a dsDNA end and its insertion into DNA-PK, thereby averting signalling into the downstream innate immunity system. C4 replicates these activities using a domain with 54% identity to C16. Our results reveal how vaccinia virus subverts the capacity of Ku to recognize viral DNA.
History
DepositionJul 19, 2022-
Header (metadata) releaseNov 9, 2022-
Map releaseNov 9, 2022-
UpdateJul 24, 2024-
Current statusJul 24, 2024Processing site: PDBe / Status: Released

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Structure visualization

Supplemental images

emd_15415.png

Downloads & links

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Map

FileDownload / File: emd_15415.map.gz / Format: CCP4 / Size: 107.2 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationMap of C16 C-terminal domains bound to Ku70/Ku80
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.84 Å/pix.
x 304 pix.
= 253.84 Å		0.84 Å/pix.
x 304 pix.
= 253.84 Å		0.84 Å/pix.
x 304 pix.
= 253.84 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.835 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.15
Minimum - Maximum-0.040631466 - 1.5536884
Average (Standard dev.)0.0012147157 (±0.023059925)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions304304304
Spacing304304304
CellA=B=C: 253.84 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: Half map 1

Fileemd_15415_half_map_1.map
AnnotationHalf map 1
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half map 2

Fileemd_15415_half_map_2.map
AnnotationHalf map 2
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Vaccinia C16 protein bound to Ku70/Ku80

EntireName: Vaccinia C16 protein bound to Ku70/Ku80
Components
  • Complex: Vaccinia C16 protein bound to Ku70/Ku80
    • Protein or peptide: X-ray repair cross-complementing protein 6
    • Protein or peptide: X-ray repair cross-complementing protein 5
    • Protein or peptide: Protein C10

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Supramolecule #1: Vaccinia C16 protein bound to Ku70/Ku80

SupramoleculeName: Vaccinia C16 protein bound to Ku70/Ku80 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 230 KDa

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Macromolecule #1: X-ray repair cross-complementing protein 6

MacromoleculeName: X-ray repair cross-complementing protein 6 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
EC number: Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 74.234703 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MSAWSHPQFE KGSAGSAAGS GAGWSHPQFE KLEVLFQGPG GSMSGWESYY KTEGDEEAEE EQEENLEASG DYKYSGRDSL IFLVDASKA MFESQSEDEL TPFDMSIQCI QSVYISKIIS SDRDLLAVVF YGTEKDKNSV NFKNIYVLQE LDNPGAKRIL E LDQFKGQQ ...String:
MSAWSHPQFE KGSAGSAAGS GAGWSHPQFE KLEVLFQGPG GSMSGWESYY KTEGDEEAEE EQEENLEASG DYKYSGRDSL IFLVDASKA MFESQSEDEL TPFDMSIQCI QSVYISKIIS SDRDLLAVVF YGTEKDKNSV NFKNIYVLQE LDNPGAKRIL E LDQFKGQQ GQKRFQDMMG HGSDYSLSEV LWVCANLFSD VQFKMSHKRI MLFTNEDNPH GNDSAKASRA RTKAGDLRDT GI FLDLMHL KKPGGFDISL FYRDIISIAE DEDLRVHFEE SSKLEDLLRK VRAKETRKRA LSRLKLKLNK DIVISVGIYN LVQ KALKPP PIKLYRETNE PVKTKTRTFN TSTGGLLLPS DTKRSQIYGS RQIILEKEET EELKRFDDPG LMLMGFKPLV LLKK HHYLR PSLFVYPEES LVIGSSTLFS ALLIKCLEKE VAALCRYTPR RNIPPYFVAL VPQEEELDDQ KIQVTPPGFQ LVFLP FADD KRKMPFTEKI MATPEQVGKM KAIVEKLRFT YRSDSFENPV LQQHFRNLEA LALDLMEPEQ AVDLTLPKVE AMNKRL GSL VDEFKELVYP PDYNPEGKVT KRKHDNEGSG SKRPKVEYSE EELKTHISKG TLGKFTVPML KEACRAYGLK SGLKKQE LL EALTKHFQD

UniProtKB: X-ray repair cross-complementing protein 6

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Macromolecule #2: X-ray repair cross-complementing protein 5

MacromoleculeName: X-ray repair cross-complementing protein 5 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
EC number: Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 85.546484 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MAHHHHHHHH HHGALEVLFQ GPHMVRSGNK AAVVLCMDVG FTMSNSIPGI ESPFEQAKKV ITMFVQRQVF AENKDEIALV LFGTDGTDN PLSGGDQYQN ITVHRHLMLP DFDLLEDIES KIQPGSQQAD FLDALIVSMD VIQHETIGKK FEKRHIEIFT D LSSRFSKS ...String:
MAHHHHHHHH HHGALEVLFQ GPHMVRSGNK AAVVLCMDVG FTMSNSIPGI ESPFEQAKKV ITMFVQRQVF AENKDEIALV LFGTDGTDN PLSGGDQYQN ITVHRHLMLP DFDLLEDIES KIQPGSQQAD FLDALIVSMD VIQHETIGKK FEKRHIEIFT D LSSRFSKS QLDIIIHSLK KCDISLQFFL PFSLGKEDGS GDRGDGPFRL GGHGPSFPLK GITEQQKEGL EIVKMVMISL EG EDGLDEI YSFSESLRKL CVFKKIERHS IHWPCRLTIG SNLSIRIAAY KSILQERVKK TWTVVDAKTL KKEDIQKETV YCL NDDDET EVLKEDIIQG FRYGSDIVPF SKVDEEQMKY KSEGKCFSVL GFCKSSQVQR RFFMGNQVLK VFAARDDEAA AVAL SSLIH ALDDLDMVAI VRYAYDKRAN PQVGVAFPHI KHNYECLVYV QLPFMEDLRQ YMFSSLKNSK KYAPTEAQLN AVDAL IDSM SLAKKDEKTD TLEDLFPTTK IPNPRFQRLF QCLLHRALHP REPLPPIQQH IWNMLNPPAE VTTKSQIPLS KIKTLF PLI EAKKKDQVTA QEIFQDNHED GPTAKKLKTE QGGAHFSVSS LAEGSVTSVG SVNPAENFRV LVKQKKASFE EASNQLI NH IEQFLDTNET PYFMKSIDCI RAFREEAIKF SEEQRFNNFL KALQEKVEIK QLNHFWEIVV QDGITLITKE EASGSSVT A EEAKKFLAPK DKPSGDTAAV FEEGGDVDDL LDMI

UniProtKB: X-ray repair cross-complementing protein 5

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Macromolecule #3: Protein C10

MacromoleculeName: Protein C10 / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Vaccinia virus Western Reserve / Strain: Western Reserve
Molecular weightTheoretical: 42.47668 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MDIYDDKGLQ TIKLFNNEFD CIRNDIRELF KHVTDSDSIQ LPMEDNSDII ENIRKILYRR LKNVECVDID STITFMKYDP NDDNKRTCS NWVPLTNNYM EYCLVIYLET PICGGKIKLY HPTGNIKSDK DIMFAKTLDF KSKKVLTGRK TIAVLDISVS Y NRSMTTIH ...String:
MDIYDDKGLQ TIKLFNNEFD CIRNDIRELF KHVTDSDSIQ LPMEDNSDII ENIRKILYRR LKNVECVDID STITFMKYDP NDDNKRTCS NWVPLTNNYM EYCLVIYLET PICGGKIKLY HPTGNIKSDK DIMFAKTLDF KSKKVLTGRK TIAVLDISVS Y NRSMTTIH YNDDVDIDIH TDKNGKELCY CYITIDDHYL VDVETIGVIV NRSGKCLLVN NHLGIGIVKD KRISDSFGDV CM DTIFDFS EARELFSLTN DDNRNIAWDT DKLDDDTDIW TPVTEDDYKF LSRLVLYAKS QSDTVFDYYV LTGDTEPPTV FIF KVTRFY FNMPKGGENL YFQGWSHPQF EKGGGSGGGS GGSSAWSHPQ FEK

UniProtKB: Protein C10

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration0.4 mg/mL
BufferpH: 7.9
Component:
ConcentrationFormulaName
50.0 mMHEPES-KOHHEPES-KOH
250.0 mMNaClNaCl
1.0 mMEDTAEDTA
0.5 mMTCEPTCEP
0.5 mMPMSFPMSF
GridModel: Quantifoil R0.6/1 / Material: COPPER / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen name: ETHANE-PROPANE / Chamber humidity: 100 % / Chamber temperature: 278 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Specialist opticsEnergy filter - Slit width: 20 eV
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Number real images: 13216 / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 50.0 µm / Illumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.4 µm / Nominal defocus min: 0.6 µm / Nominal magnification: 105000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 12495814
Startup modelType of model: OTHER / Details: Ab intio model generated from the data set
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 2.46 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION / Number images used: 579038
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION
Final 3D classificationSoftware: (Name: RELION, cryoSPARC)
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial model
PDB IDChain

1jey

chain_id: A, source_name: PDB, initial_model_type: experimental model

1jey

chain_id: B, source_name: PDB, initial_model_type: experimental model
DetailsInitial model for chains C and D was generated using AlphaFold2
RefinementSpace: REAL / Protocol: RIGID BODY FIT
Output model

PDB-8ag4:
Vaccinia C16 protein bound to Ku70/Ku80

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