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- EMDB-62235: Cryo-EM structure of DCL4-DRB4CTD-dsRNA complex -

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Basic information

Entry
Database: EMDB / ID: EMD-62235
TitleCryo-EM structure of DCL4-DRB4CTD-dsRNA complex
Map data
Sample
  • Complex: Cryo-EM structure of DCL4 in complex with DRB4 CTD and RNA
    • Protein or peptide: Dicer-like protein 4
    • Protein or peptide: Double-stranded RNA-binding protein 4
    • RNA: RNA (57-MER)
    • RNA: RNA (55-MER)
  • Ligand: MAGNESIUM ION
KeywordsDCL4 / DRB4 / siRNA / Dicer / RNA BINDING PROTEIN/RNA / RNA BINDING PROTEIN-RNA complex
Function / homology
Function and homology information


vegetative phase change / lsiRNA processing / polarity specification of adaxial/abaxial axis / RNAi-mediated antiviral immunity against RNA virus / maintenance of shoot apical meristem identity / ta-siRNA processing / RNAi-mediated antiviral immune response / reproductive structure development / miRNA processing / ribonuclease III activity ...vegetative phase change / lsiRNA processing / polarity specification of adaxial/abaxial axis / RNAi-mediated antiviral immunity against RNA virus / maintenance of shoot apical meristem identity / ta-siRNA processing / RNAi-mediated antiviral immune response / reproductive structure development / miRNA processing / ribonuclease III activity / Hydrolases; Acting on ester bonds; Endoribonucleases producing 5'-phosphomonoesters / DNA-templated transcription termination / helicase activity / cytoplasmic ribonucleoprotein granule / double-stranded RNA binding / defense response to virus / RNA binding / ATP binding / metal ion binding / nucleus / cytosol
Similarity search - Function
AtDRB-like, first double-stranded RNA binding domain, plant / AtDRB-like, second double-stranded RNA binding domain, plant / double strand RNA binding domain from DEAD END PROTEIN 1 / Dicer dimerisation domain / Dicer dimerisation domain superfamily / Dicer dimerisation domain / Dicer double-stranded RNA-binding fold domain profile. / Ribonuclease III family signature. / Ribonuclease III domain / Ribonuclease III family domain profile. ...AtDRB-like, first double-stranded RNA binding domain, plant / AtDRB-like, second double-stranded RNA binding domain, plant / double strand RNA binding domain from DEAD END PROTEIN 1 / Dicer dimerisation domain / Dicer dimerisation domain superfamily / Dicer dimerisation domain / Dicer double-stranded RNA-binding fold domain profile. / Ribonuclease III family signature. / Ribonuclease III domain / Ribonuclease III family domain profile. / Ribonuclease III family / Ribonuclease III domain / PAZ / PAZ domain profile. / PAZ domain / Double-stranded RNA binding motif / Double-stranded RNA binding motif / Ribonuclease III, endonuclease domain superfamily / Double stranded RNA-binding domain (dsRBD) profile. / Double-stranded RNA-binding domain / DEAD/DEAH box helicase domain / DEAD/DEAH box helicase / Helicase conserved C-terminal domain / helicase superfamily c-terminal domain / Superfamilies 1 and 2 helicase C-terminal domain profile. / Superfamilies 1 and 2 helicase ATP-binding type-1 domain profile. / DEAD-like helicases superfamily / Helicase, C-terminal / Helicase superfamily 1/2, ATP-binding domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Dicer-like protein 4 / Double-stranded RNA-binding protein 4
Similarity search - Component
Biological speciesArabidopsis thaliana (thale cress)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.18 Å
AuthorsWang C / Du J
Funding support China, 1 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)32325008 China
CitationJournal: To Be Published
Title: Cryo-EM structure of DCL4-DRB4CTD-dsRNA complex
Authors: Wang C / Du J
History
DepositionOct 31, 2024-
Header (metadata) releaseFeb 18, 2026-
Map releaseFeb 18, 2026-
UpdateFeb 18, 2026-
Current statusFeb 18, 2026Processing site: PDBc / Status: Released

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Structure visualization

Supplemental images

emd_62235.png

Downloads & links

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Map

FileDownload / File: emd_62235.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.86 Å/pix.
x 360 pix.
= 307.8 Å		0.86 Å/pix.
x 360 pix.
= 307.8 Å		0.86 Å/pix.
x 360 pix.
= 307.8 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.855 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.17
Minimum - Maximum-2.0850055 - 3.7023146
Average (Standard dev.)-0.0011971747 (±0.06120888)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions360360360
Spacing360360360
CellA=B=C: 307.80002 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_62235_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_62235_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Cryo-EM structure of DCL4 in complex with DRB4 CTD and RNA

EntireName: Cryo-EM structure of DCL4 in complex with DRB4 CTD and RNA
Components
  • Complex: Cryo-EM structure of DCL4 in complex with DRB4 CTD and RNA
    • Protein or peptide: Dicer-like protein 4
    • Protein or peptide: Double-stranded RNA-binding protein 4
    • RNA: RNA (57-MER)
    • RNA: RNA (55-MER)
  • Ligand: MAGNESIUM ION

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Supramolecule #1: Cryo-EM structure of DCL4 in complex with DRB4 CTD and RNA

SupramoleculeName: Cryo-EM structure of DCL4 in complex with DRB4 CTD and RNA
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Source (natural)Organism: Arabidopsis thaliana (thale cress)
Molecular weightTheoretical: 240 KDa

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Macromolecule #1: Dicer-like protein 4

MacromoleculeName: Dicer-like protein 4 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
EC number: Hydrolases; Acting on ester bonds; Endoribonucleases producing 5'-phosphomonoesters
Source (natural)Organism: Arabidopsis thaliana (thale cress)
Molecular weightTheoretical: 193.967438 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MWSHPQFEKG SGSGSGSWSH PQFEKSYYHH HHHHHHHHDY DIPTTENLYF QGAMPYSEIG DDLRSLDFDH ADVSSDLHLT SSSSVSSFS SSSSSLFSAA GTDDPSPKME KDPRKIARRY QVELCKKATE ENVIVYLGTG CGKTHIAVML IYELGHLVLS P KKSVCIFL ...String:
MWSHPQFEKG SGSGSGSWSH PQFEKSYYHH HHHHHHHHDY DIPTTENLYF QGAMPYSEIG DDLRSLDFDH ADVSSDLHLT SSSSVSSFS SSSSSLFSAA GTDDPSPKME KDPRKIARRY QVELCKKATE ENVIVYLGTG CGKTHIAVML IYELGHLVLS P KKSVCIFL APTVALVEQQ AKVIADSVNF KVAIHCGGKR IVKSHSEWER EIAANEVLVM TPQILLHNLQ HCFIKMECIS LL IFDECHH AQQQSNHPYA EIMKVFYKSE SLQRPRIFGM TASPVVGKGS FQSENLSKSI NSLENLLNAK VYSVESNVQL DGF VSSPLV KVYYYRSALS DASQSTIRYE NMLEDIKQRC LASLKLLIDT HQTQTLLSMK RLLKRSHDNL IYTLLNLGLW GAIQ AAKIQ LNSDHNVQDE PVGKNPKSKI CDTYLSMAAE ALSSGVAKDE NASDLLSLAA LKEPLFSRKL VQLIKILSVF RLEPH MKCI IFVNRIVTAR TLSCILNNLE LLRSWKSDFL VGLSSGLKSM SRRSMETILK RFQSKELNLL VATKVGEEGL DIQTCC LVI RYDLPETVTS FIQSRGRARM PQSEYAFLVD SGNEKEMDLI ENFKVNEDRM NLEITYRSSE ETCPRLDEEL YKVHETG AC ISGGSSISLL YKYCSRLPHD EFFQPKPEFQ FKPVDEFGGT ICRITLPANA PISEIESSLL PSTEAAKKDA CLKAVHEL H NLGVLNDFLL PDSKDEIEDE LSDDEFDFDN IKGEGCSRGD LYEMRVPVLF KQKWDPSTSC VNLHSYYIMF VPHPADRIY KKFGFFMKSP LPVEAETMDI DLHLAHQRSV SVKIFPSGVT EFDNDEIRLA ELFQEIALKV LFERGELIPD FVPLELQDSS RTSKSTFYL LLPLCLHDGE SVISVDWVTI RNCLSSPIFK TPSVLVEDIF PPSGSHLKLA NGCWNIDDVK NSLVFTTYSK Q FYFVADIC HGRNGFSPVK ESSTKSHVES IYKLYGVELK HPAQPLLRVK PLCHVRNLLH NRMQTNLEPQ ELDEYFIEIP PE LSHLKIK GLSKDIGSSL SLLPSIMHRM ENLLVAIELK HVLSASIPEI AEVSGHRVLE ALTTEKCHER LSLERLEVLG DAF LKFAVS RHLFLHHDSL DEGELTRRRS NVVNNSNLCR LAIKKNLQVY IRDQALDPTQ FFAFGHPCRV TCDEVASKEV HSLN RDLGI LESNTGEIRC SKGHHWLYKK TIANVVQALV GAFLVDSGFK GAVKFLKWIG VNVDFESLQV QDACIASRRY LPLTT RNNL ETLENQLDYK FLHKGLLVQA FIHPSYNRHG GGCYQRLEFL GDAVLDYLMT SYFFTVFPKL KPGQLTDLRS LSVNNE ALA NVAVSFSLKR FLFCESIYLH EVIEDYTNFL ASSPLASGQS EGPRCPKVLG NLVQSCLGAL FLDCGFNLNH VWTMMLS FL DPVKNLSNLQ ISPIKELIEL CQSYKWDREI SATKKDGAFT VELKVTKNGC CLTVSATGRN KREGTKKAAQ LMITNLKA H ENITTSHPLE DVLKNGIRNE AKLIGYNEDP IDVVDLVGLD VENLNILETF GGNSERSSSY VIRRGLPQAP SKTEDRLPQ KAIIKAGGPS SKTAKSLLHE TCVANCWKPP HFECCEEEGP GHLKSFVYKV ILEVEDAPNM TLECYGEARA TKKGAAEHAA QAAIWCLKH SGFLCDYKDD DDKGDYKDDD DKIDYKDDDD K

UniProtKB: Dicer-like protein 4

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Macromolecule #2: Double-stranded RNA-binding protein 4

MacromoleculeName: Double-stranded RNA-binding protein 4 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Arabidopsis thaliana (thale cress)
Molecular weightTheoretical: 13.526003 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString:
MWSHPQFEKG SGSGSGSWSH PQFEKSYYHH HHHHHHHHDY DIPTTENLYF QGAGSETSSC VVDESEKKKL IMGTGHLSIP TGQHVVCRP WNPEITLPQD AEMLFRDDKF IAYRLVKP

UniProtKB: Double-stranded RNA-binding protein 4

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Macromolecule #3: RNA (57-MER)

MacromoleculeName: RNA (57-MER) / type: rna / ID: 3 / Number of copies: 1
Source (natural)Organism: Arabidopsis thaliana (thale cress)
Molecular weightTheoretical: 18.24977 KDa
SequenceString:
CUAAGAUCUU AUCGAACGCU AUGUUGGACU UAGGAUGAAU GACUCAUUCG CUUGUAG

GENBANK: GENBANK: AC006232.4

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Macromolecule #4: RNA (55-MER)

MacromoleculeName: RNA (55-MER) / type: rna / ID: 4 / Number of copies: 1
Source (natural)Organism: Arabidopsis thaliana (thale cress)
Molecular weightTheoretical: 17.610512 KDa
SequenceString:
ACAAGCGAAU GAGUCAUUCA UCCUAAGUCC AACAUAGCGU UCGAUAAGAU CUUAG

GENBANK: GENBANK: AC006232.4

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Macromolecule #5: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 5 / Number of copies: 3 / Formula: MG
Molecular weightTheoretical: 24.305 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

Concentration0.15 mg/mL
BufferpH: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.0 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.18 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 105170
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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