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- PDB-9y4p: Cryo-EM structure of DNMT3A2/3B3 in complex with H3K36me2 di-nucl... -

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Basic information

Entry
Database: PDB / ID: 9y4p
TitleCryo-EM structure of DNMT3A2/3B3 in complex with H3K36me2 di-nucleosome with eight base pair linker
Components
  • (DNA (321-MER)) x 2
  • DNA (cytosine-5)-methyltransferase 3A
  • Histone H2A type 1
  • Histone H2B 1.1
  • Histone H3
  • Histone H3.2
  • Histone H4
  • Isoform 7 of DNA (cytosine-5)-methyltransferase 3B
KeywordsDNA BINDING PROTEIN / DNMT3A2/DNMT3B3 / DNA methylation / H3K36me2 di-nucleosome
Function / homology
Function and homology information


DNA (cytosine-5-)-methyltransferase activity, acting on CpG substrates / transposable element silencing by piRNA-mediated DNA methylation / positive regulation of cellular response to hypoxia / protein-cysteine methyltransferase activity / DNA-methyltransferase activity / regulatory ncRNA-mediated heterochromatin formation / cellular response to bisphenol A / unmethylated CpG binding / DNA (cytosine-5-)-methyltransferase / DNA (cytosine-5-)-methyltransferase activity ...DNA (cytosine-5-)-methyltransferase activity, acting on CpG substrates / transposable element silencing by piRNA-mediated DNA methylation / positive regulation of cellular response to hypoxia / protein-cysteine methyltransferase activity / DNA-methyltransferase activity / regulatory ncRNA-mediated heterochromatin formation / cellular response to bisphenol A / unmethylated CpG binding / DNA (cytosine-5-)-methyltransferase / DNA (cytosine-5-)-methyltransferase activity / autosome genomic imprinting / SUMOylation of DNA methylation proteins / XY body / oocyte development / response to vitamin A / DNA methylation-dependent constitutive heterochromatin formation / response to ionizing radiation / hepatocyte apoptotic process / negative regulation of gene expression via chromosomal CpG island methylation / lncRNA binding / chromosome, centromeric region / cellular response to ethanol / catalytic complex / heterochromatin / Transferases; Transferring one-carbon groups; Methyltransferases / DNA methylation / post-embryonic development / PRC2 methylates histones and DNA / Defective pyroptosis / response to cocaine / cellular response to amino acid stimulus / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / euchromatin / NoRC negatively regulates rRNA expression / response to lead ion / response to toxic substance / nuclear matrix / RMTs methylate histone arginines / neuron differentiation / structural constituent of chromatin / transcription corepressor activity / response to estradiol / nucleosome / heterochromatin formation / nucleosome assembly / methylation / spermatogenesis / cellular response to hypoxia / RNA polymerase II-specific DNA-binding transcription factor binding / RNA polymerase II cis-regulatory region sequence-specific DNA binding / response to xenobiotic stimulus / protein heterodimerization activity / negative regulation of DNA-templated transcription / chromatin binding / positive regulation of gene expression / negative regulation of transcription by RNA polymerase II / DNA binding / zinc ion binding / nucleoplasm / identical protein binding / nucleus / cytoplasm
Similarity search - Function
DNA (cytosine-5)-methyltransferase 3A, ADD domain / : / DNA (cytosine-5-)-methyltransferase, N-terminal / DNA (cytosine-5)-methyltransferase 3B, ADD domain / DNMT3, cysteine rich ADD domain / : / DNMT3, cysteine rich ADD domain, GATA1-like zinc finger / DNMT3, ADD PHD zinc finger / ADD domain / ADD domain profile. ...DNA (cytosine-5)-methyltransferase 3A, ADD domain / : / DNA (cytosine-5-)-methyltransferase, N-terminal / DNA (cytosine-5)-methyltransferase 3B, ADD domain / DNMT3, cysteine rich ADD domain / : / DNMT3, cysteine rich ADD domain, GATA1-like zinc finger / DNMT3, ADD PHD zinc finger / ADD domain / ADD domain profile. / : / DNA methylase, C-5 cytosine-specific, active site / C-5 cytosine-specific DNA methylases active site. / C-5 cytosine-specific DNA methylase (Dnmt) domain profile. / C-5 cytosine methyltransferase / C-5 cytosine-specific DNA methylase / domain with conserved PWWP motif / PWWP domain / PWWP domain profile. / PWWP domain / : / Histone H2A conserved site / Histone H2A signature. / Histone H2B signature. / Histone H2B / Histone H2B / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone 2A / Histone H2A / TATA box binding protein associated factor / TATA box binding protein associated factor (TAF), histone-like fold domain / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / CENP-T/Histone H4, histone fold / Centromere kinetochore component CENP-T histone fold / Zinc finger, FYVE/PHD-type / Histone H3 signature 1. / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 domain / Histone-fold / S-adenosyl-L-methionine-dependent methyltransferase superfamily
Similarity search - Domain/homology
S-ADENOSYL-L-HOMOCYSTEINE / DNA / DNA (> 10) / DNA (> 100) / Histone H3 / Histone H2B 1.1 / Histone H2A type 1 / Histone H4 / Histone H3.2 / DNA (cytosine-5)-methyltransferase 3B / DNA (cytosine-5)-methyltransferase 3A
Similarity search - Component
Biological speciesXenopus laevis (African clawed frog)
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.84 Å
AuthorsXie, X. / Zhou, X.E. / Worden, E.J. / Jones, P.A.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Cancer Institute (NIH/NCI)R35CA209859 United States
CitationJournal: To Be Published
Title: The structure basis for de novo DNA methylation in chromatin
Authors: Xie, X. / Liu, M. / Zhou, X.E. / Worden, E.J. / Jones, P.A.
History
DepositionSep 3, 2025Deposition site: RCSB / Processing site: RCSB
Revision 1.0Feb 18, 2026Provider: repository / Type: Initial release
Revision 1.0Feb 18, 2026Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Feb 18, 2026Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Feb 18, 2026Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Histone H3
B: Histone H4
C: Histone H2A type 1
D: Histone H2B 1.1
E: Histone H3.2
F: Histone H4
G: Histone H2A type 1
H: Histone H2B 1.1
I: DNA (321-MER)
W: Histone H3.2
X: Histone H4
Y: Histone H2A type 1
P: Histone H2B 1.1
Q: Histone H3.2
R: Histone H4
S: Histone H2A type 1
T: Histone H2B 1.1
J: DNA (321-MER)
b: Isoform 7 of DNA (cytosine-5)-methyltransferase 3B
Z: Isoform 7 of DNA (cytosine-5)-methyltransferase 3B
a: DNA (cytosine-5)-methyltransferase 3A
c: DNA (cytosine-5)-methyltransferase 3A
e: Isoform 7 of DNA (cytosine-5)-methyltransferase 3B
g: Isoform 7 of DNA (cytosine-5)-methyltransferase 3B
f: DNA (cytosine-5)-methyltransferase 3A
d: DNA (cytosine-5)-methyltransferase 3A
hetero molecules


Theoretical massNumber of molelcules
Total (without water)992,28448
Polymers989,56926
Non-polymers2,71522
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Protein , 7 types, 24 molecules ABFXRCGYSDHPTEWQbZegacfd

#1: Protein Histone H3


Mass: 15330.975 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Gene: LOC121398065, LOC108703785, LOC121398067 / Production host: Escherichia coli (E. coli) / References: UniProt: A0A310TTQ1
#2: Protein
Histone H4


Mass: 11394.426 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P62799
#3: Protein
Histone H2A type 1


Mass: 13978.241 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P06897
#4: Protein
Histone H2B 1.1 / H2B1.1


Mass: 13655.948 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P02281
#5: Protein Histone H3.2 / Histone H3


Mass: 15303.930 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P84233
#8: Protein
Isoform 7 of DNA (cytosine-5)-methyltransferase 3B / Dnmt3b / DNA methyltransferase HsaIIIB / DNA MTase HsaIIIB / M.HsaIIIB


Mass: 65568.391 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: DNMT3B / Production host: Spodoptera (butterflies/moths)
References: UniProt: Q9UBC3, DNA (cytosine-5-)-methyltransferase
#9: Protein
DNA (cytosine-5)-methyltransferase 3A / Dnmt3a / DNA methyltransferase HsaIIIA / M.HsaIIIA


Mass: 77914.711 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: DNMT3A / Production host: Spodoptera (butterflies/moths)
References: UniProt: Q9Y6K1, DNA (cytosine-5-)-methyltransferase

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DNA chain , 2 types, 2 molecules IJ

#6: DNA chain DNA (321-MER)


Mass: 99578.164 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli (E. coli)
#7: DNA chain DNA (321-MER)


Mass: 98701.617 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli (E. coli)

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Non-polymers , 2 types, 22 molecules

#10: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 18 / Source method: obtained synthetically / Formula: Zn
#11: Chemical
ChemComp-SAH / S-ADENOSYL-L-HOMOCYSTEINE


Mass: 384.411 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C14H20N6O5S / Feature type: SUBJECT OF INVESTIGATION

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Details

Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: DNMT3A/3B tetramer bound to H3K36me2 di-nucleosome / Type: COMPLEX / Entity ID: #1-#9 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera (butterflies/moths)
Buffer solutionpH: 7.8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 1500 nm / Nominal defocus min: 1100 nm
Image recordingElectron dose: 61 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM software
IDNameVersionCategory
1cryoSPARCparticle selection
2PHENIX1.13_2998:model refinement
13cryoSPARC3D reconstruction
CTF correctionType: NONE
3D reconstructionResolution: 3.84 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 176300 / Symmetry type: POINT
RefinementCross valid method: NONE

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