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Basic information

Entry
Database: EMDB / ID: EMD-71847
TitleCryo-EM structure of the DCAF11 E3 ligase bound to the DDX18 helicase mediated by GSH-M12
Map dataComposite map of DD18-GSHM12-DCAF11-DDB1 ternary complex
Sample
  • Complex: Ternary complex of the E3 ligase DCAF11 and the helicase DDX18 mediated by GSH-M12
    • Protein or peptide: DDB1- and CUL4-associated factor 11
    • Protein or peptide: ATP-dependent RNA helicase DDX18
    • Protein or peptide: DNA damage-binding protein 1
  • Ligand: L-gamma-glutamyl-S-{6-chloro-5-[(3,5-dimethylphenoxy)carbonyl]-3-fluoropyridin-2-yl}-L-cysteinylglycine
Keywordsglutathionylation / degradation / E3 ligase / helicase / LIGASE
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.38 Å
AuthorsWachter F / Jin CY / Yoon H / Ebert BL / Fischer ES
Funding support United States, 2 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)1 K99GM154065-01A1 United States
National Institutes of Health/National Cancer Institute (NIH/NCI)5R01CA214608-09 United States
CitationJournal: To Be Published
Title: Cryo-EM structure of the DCAF11 E3 ligase bound to the DDX18 helicase mediated by GSH-M12
Authors: Wachter F / Jin CY / Yoon H / Ebert BL / Fischer ES
History
DepositionJul 29, 2025-
Header (metadata) releaseJul 1, 2026-
Map releaseJul 1, 2026-
UpdateJul 1, 2026-
Current statusJul 1, 2026Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_71847.png

Downloads & links

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Map

FileReleased
AnnotationComposite map of DD18-GSHM12-DCAF11-DDB1 ternary complex
Voxel sizeX=Y=Z: 0.73 Å
Density
Contour LevelBy AUTHOR: 0.04
Minimum - Maximum-0.091886014 - 0.25623682
Average (Standard dev.)0.0007619169 (±0.0051763067)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions384384384
Spacing384384384
CellA=B=C: 280.32 Å
α=β=γ: 90.0 °

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Supplemental data

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Sample components

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Entire : Ternary complex of the E3 ligase DCAF11 and the helicase DDX18 me...

EntireName: Ternary complex of the E3 ligase DCAF11 and the helicase DDX18 mediated by GSH-M12
Components
  • Complex: Ternary complex of the E3 ligase DCAF11 and the helicase DDX18 mediated by GSH-M12
    • Protein or peptide: DDB1- and CUL4-associated factor 11
    • Protein or peptide: ATP-dependent RNA helicase DDX18
    • Protein or peptide: DNA damage-binding protein 1
  • Ligand: L-gamma-glutamyl-S-{6-chloro-5-[(3,5-dimethylphenoxy)carbonyl]-3-fluoropyridin-2-yl}-L-cysteinylglycine

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Supramolecule #1: Ternary complex of the E3 ligase DCAF11 and the helicase DDX18 me...

SupramoleculeName: Ternary complex of the E3 ligase DCAF11 and the helicase DDX18 mediated by GSH-M12
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: DDB1- and CUL4-associated factor 11

MacromoleculeName: DDB1- and CUL4-associated factor 11 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 66.606797 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MDWSHPQFEK SAVGLNDIFE AQKIEWHEGG GGSGENLYFQ GGGRMGSRNS SSAGSGSGDP SEGLPRRGAG LRRSEEEEEE DEDVDLAQV LAYLLRRGQV RLVQGGGAAN LQFIQALLDS EEENDRAWDG RLGDRYNPPV DATPDTRELE FNEIKTQVEL A TGQLGLRR ...String:
MDWSHPQFEK SAVGLNDIFE AQKIEWHEGG GGSGENLYFQ GGGRMGSRNS SSAGSGSGDP SEGLPRRGAG LRRSEEEEEE DEDVDLAQV LAYLLRRGQV RLVQGGGAAN LQFIQALLDS EEENDRAWDG RLGDRYNPPV DATPDTRELE FNEIKTQVEL A TGQLGLRR AAQKHSFPRM LHQRERGLCH RGSFSLGEQS RVISHFLPND LGFTDSYSQK AFCGIYSKDG QIFMSACQDQ TI RLYDCRY GRFRKFKSIK ARDVGWSVLD VAFTPDGNHF LYSSWSDYIH ICNIYGEGDT HTALDLRPDE RRFAVFSIAV SSD GREVLG GANDGCLYVF DREQNRRTLQ IESHEDDVNA VAFADISSQI LFSGGDDAIC KVWDRRTMRE DDPKPVGALA GHQD GITFI DSKGDARYLI SNSKDQTIKL WDIRRFSSRE GMEASRQAAT QQNWDYRWQQ VPKKAWRKLK LPGDSSLMTY RGHGV LHTL IRCRFSPIHS TGQQFIYSGC STGKVVVYDL LSGHIVKKLT NHKACVRDVS WHPFEEKIVS SSWDGNLRLW QYRQAE YFQ DDMPESEECA SAPAPVPQSS TPFSSPQ

UniProtKB: DDB1- and CUL4-associated factor 11

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Macromolecule #2: ATP-dependent RNA helicase DDX18

MacromoleculeName: ATP-dependent RNA helicase DDX18 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO / EC number: RNA helicase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 54.206383 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MDYKDDDDKS AVDENLYFQG GGRTGAFEDT SFASLCNLVN ENTLKAIKEM GFTNMTEIQH KSIRPLLEGR DLLAAAKTGS GKTLAFLIP AVELIVKLRF MPRNGTGVLI LSPTRELAMQ TFGVLKELMT HHVHTYGLIM GGSNRSAEAQ KLGNGINIIV A TPGRLLDH ...String:
MDYKDDDDKS AVDENLYFQG GGRTGAFEDT SFASLCNLVN ENTLKAIKEM GFTNMTEIQH KSIRPLLEGR DLLAAAKTGS GKTLAFLIP AVELIVKLRF MPRNGTGVLI LSPTRELAMQ TFGVLKELMT HHVHTYGLIM GGSNRSAEAQ KLGNGINIIV A TPGRLLDH MQNTPGFMYK NLQCLVIDEA DRILDVGFEE ELKQIIKLLP TRRQTMLFSA TQTRKVEDLA RISLKKEPLY VG VDDDKAN ATVDGLEQGY VVCPSEKRFL LLFTFLKKNR KKKLMVFFSS CMSVKYHYEL LNYIDLPVLA IHGKQKQNKR TTT FFQFCN ADSGTLLCTD VAARGLDIPE VDWIVQYDPP DDPKEYIHRV GRTARGLNGR GHALLILRPE ELGFLRYLKQ SKVP LSEFD FSWSKISDIQ SQLEKLIEKN YFLHKSAQEA YKSYIRAYDS HSLKQIFNVN NLNLPQVALS FGFKVPPFVD LNV

UniProtKB: ATP-dependent RNA helicase DDX18

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Macromolecule #3: DNA damage-binding protein 1

MacromoleculeName: DNA damage-binding protein 1 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 96.425586 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MGSSHHHHHH SAAHIVMVDA YKPTKGGRMS YNYVVTAQKP TAVNGCVTGH FTSAEDLNLL IAKNTRLEIY VVTAEGLRPV KEVGMYGKI AVMELFRPKG ESKDLLFILT AKYNACILEY KQSGESIDII TRAHGNVQDR IGRPSETGII GIIDPECRMI G LRLYDGLF ...String:
MGSSHHHHHH SAAHIVMVDA YKPTKGGRMS YNYVVTAQKP TAVNGCVTGH FTSAEDLNLL IAKNTRLEIY VVTAEGLRPV KEVGMYGKI AVMELFRPKG ESKDLLFILT AKYNACILEY KQSGESIDII TRAHGNVQDR IGRPSETGII GIIDPECRMI G LRLYDGLF KVIPLDRDNK ELKAFNIRLE ELHVIDVKFL YGCQAPTICF VYQDPQGRHV KTYEVSLREK EFNKGPWKQE NV EAEASMV IAVPEPFGGA IIIGQESITY HNGDKYLAIA PPIIKQSTIV CHNRVDPNGS RYLLGDMEGR LFMLLLEKEE QMD GTVTLK DLRVELLGET SIAECLTYLD NGVVFVGSRL GDSQLVKLNV DSNEQGSYVV AMETFTNLGP IVDMCVVDLE RQGQ GQLVT CSGAFKEGSL RIIRNGIGGN GNSGEIQKLH IRTVPLYESP RKICYQEVSQ CFGVLSSRIE VQDTSGGTTA LRPSA STQA LSSSVSSSKL FSSSTAPHET SFGEEVEVHN LLIIDQHTFE VLHAHQFLQN EYALSLVSCK LGKDPNTYFI VGTAMV YPE EAEPKQGRIV VFQYSDGKLQ TVAEKEVKGA VYSMVEFNGK LLASINSTVR LYEWTTEKEL RTECNHYNNI MALYLKT KG DFILVGDLMR SVLLLAYKPM EGNFEEIARD FNPNWMSAVE ILDDDNFLGA ENAFNLFVCQ KDSAATTDEE RQHLQEVG L FHLGEFVNVF CHGSLVMQNL GETSTPTQGS VLFGTVNGMI GLVTSLSESW YNLLLDMQNR LNKVIKSVGK IEHSFWRSF HTERKTEPAT GFIDGDLIES FLDISRPKMQ EVVANLQYDD GSGMKREATA DDLIKVVEEL TRIH

UniProtKB: DNA damage-binding protein 1, DNA damage-binding protein 1

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Macromolecule #4: L-gamma-glutamyl-S-{6-chloro-5-[(3,5-dimethylphenoxy)carbonyl]-3-...

MacromoleculeName: L-gamma-glutamyl-S-{6-chloro-5-[(3,5-dimethylphenoxy)carbonyl]-3-fluoropyridin-2-yl}-L-cysteinylglycine
type: ligand / ID: 4 / Number of copies: 1 / Formula: A1CK5
Molecular weightTheoretical: 585.002 Da

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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

Concentration0.5 mg/mL
BufferpH: 7.4
Component:
ConcentrationFormulaName
50.0 mMC8H18N2O4SHEPES
200.0 mMNaClsodium chloride
5.0 mMC9H15O6PTCEP

Details: 50mM HEPES pH 7.4 200mM NaCl 5 mM TCEP
GridModel: Quantifoil R0.6/1 / Material: GOLD / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY ARRAY
VitrificationCryogen name: ETHANE / Chamber humidity: 90 % / Chamber temperature: 283.15 K / Instrument: LEICA EM GP

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: TFS FALCON 4i (4k x 4k) / Number grids imaged: 1 / Number real images: 10632 / Average exposure time: 3.16 sec. / Average electron dose: 52.004 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.6 µm / Nominal magnification: 165000
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

DetailsMotion corrected on the fly as implemented in cryosparc live
Particle selectionNumber selected: 3767503 / Details: Topaz
CTF correctionSoftware - Name: cryoSPARC (ver. 4.5.3) / Details: As implemented in cryosparc live / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: OTHER / Details: Ab initio
Final reconstructionNumber classes used: 2 / Applied symmetry - Point group: C1 (asymmetric) / Algorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 2.38 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 4.6.2) / Details: As in cryosparc / Number images used: 136583
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 4.5.3)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 4.5.3)
Final 3D classificationNumber classes: 12 / Software - Name: cryoSPARC (ver. 4.5.3)

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Atomic model buiding 1

Initial model
PDB IDChain

1-v4

chain_id: A, source_name: AlphaFold, initial_model_type: in silico model

5fqd

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

1-v4

chain_id: A, source_name: AlphaFold, initial_model_type: in silico model
RefinementSpace: REAL / Protocol: OTHER / Target criteria: real space correlation
Output model

PDB-9ptu:
Cryo-EM structure of the DCAF11 E3 ligase bound to the DDX18 helicase mediated by GSH-M12

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