8TAS

PRC2 monomer bound to nucleosome


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Activation of automethylated PRC2 by dimerization on chromatin.

Sauer, P.V.Pavlenko, E.Cookis, T.Zirden, L.C.Renn, J.Singhal, A.Hunold, P.Hoehne-Wiechmann, M.N.van Ray, O.Kaschani, F.Kaiser, M.Hansel-Hertsch, R.Sanbonmatsu, K.Y.Nogales, E.Poepsel, S.

(2024) Mol Cell 

  • DOI: https://doi.org/10.1016/j.molcel.2024.08.025
  • Primary Citation of Related Structures:  
    8T9G, 8TAS, 8TB9

  • PubMed Abstract: 

    Polycomb repressive complex 2 (PRC2) is an epigenetic regulator that trimethylates lysine 27 of histone 3 (H3K27me3) and is essential for embryonic development and cellular differentiation. H3K27me3 is associated with transcriptionally repressed chromatin and is established when PRC2 is allosterically activated upon methyl-lysine binding by the regulatory subunit EED. Automethylation of the catalytic subunit enhancer of zeste homolog 2 (EZH2) stimulates its activity by an unknown mechanism. Here, we show that human PRC2 forms a dimer on chromatin in which an inactive, automethylated PRC2 protomer is the allosteric activator of a second PRC2 that is poised to methylate H3 of a substrate nucleosome. Functional assays support our model of allosteric trans-autoactivation via EED, suggesting a previously unknown mechanism mediating context-dependent activation of PRC2. Our work showcases the molecular mechanism of auto-modification-coupled dimerization in the regulation of chromatin-modifying complexes.


  • Organizational Affiliation

    California Institute for Quantitative Biology (QB3), University of California, Berkeley, CA 94720, USA; Howard Hughes Medical Institute, University of California, Berkeley, CA 94720, USA.


Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Polycomb protein SUZ12A [auth D]619Homo sapiensMutation(s): 0 
Gene Names: SUZ12CHET9JJAZ1KIAA0160
UniProt & NIH Common Fund Data Resources
Find proteins for Q15022 (Homo sapiens)
Explore Q15022 
Go to UniProtKB:  Q15022
PHAROS:  Q15022
GTEx:  ENSG00000178691 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ15022
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Histone-lysine N-methyltransferase EZH2B [auth E]753Homo sapiensMutation(s): 0 
Gene Names: EZH2KMT6
EC: 2.1.1.356
UniProt & NIH Common Fund Data Resources
Find proteins for Q15910 (Homo sapiens)
Explore Q15910 
Go to UniProtKB:  Q15910
PHAROS:  Q15910
GTEx:  ENSG00000106462 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ15910
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Polycomb protein EEDC [auth G]441Homo sapiensMutation(s): 0 
Gene Names: EED
UniProt & NIH Common Fund Data Resources
Find proteins for O75530 (Homo sapiens)
Explore O75530 
Go to UniProtKB:  O75530
PHAROS:  O75530
GTEx:  ENSG00000074266 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO75530
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H3.2D [auth I],
L [auth W]
136Xenopus laevisMutation(s): 0 
UniProt
Find proteins for P84233 (Xenopus laevis)
Explore P84233 
Go to UniProtKB:  P84233
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP84233
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H4F [auth J],
M [auth X]
106Xenopus laevisMutation(s): 0 
UniProt
Find proteins for P62799 (Xenopus laevis)
Explore P62799 
Go to UniProtKB:  P62799
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP62799
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H2AG [auth R],
J [auth U]
133Xenopus laevisMutation(s): 0 
Gene Names: h2ac14.L
UniProt
Find proteins for Q6AZJ8 (Xenopus laevis)
Explore Q6AZJ8 
Go to UniProtKB:  Q6AZJ8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6AZJ8
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H2B 1.1H [auth S],
K [auth V]
123Xenopus laevisMutation(s): 0 
UniProt
Find proteins for P02281 (Xenopus laevis)
Explore P02281 
Go to UniProtKB:  P02281
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02281
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
Histone-binding protein RBBP4N [auth O]425Homo sapiensMutation(s): 0 
Gene Names: RBBP4RBAP48
UniProt & NIH Common Fund Data Resources
Find proteins for Q09028 (Homo sapiens)
Explore Q09028 
Go to UniProtKB:  Q09028
PHAROS:  Q09028
GTEx:  ENSG00000162521 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ09028
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
Zinc finger protein AEBP2O [auth Y]303Homo sapiensMutation(s): 0 
Gene Names: AEBP2
UniProt & NIH Common Fund Data Resources
Find proteins for Q6ZN18 (Homo sapiens)
Explore Q6ZN18 
Go to UniProtKB:  Q6ZN18
PHAROS:  Q6ZN18
GTEx:  ENSG00000139154 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6ZN18
Sequence Annotations
Expand
  • Reference Sequence
Find similar nucleic acids by:  (by identity cutoff)  |  3D Structure
Entity ID: 5
MoleculeChains LengthOrganismImage
DNA (226-MER)E [auth H]215synthetic construct
Sequence Annotations
Expand
  • Reference Sequence
Find similar nucleic acids by:  (by identity cutoff)  |  3D Structure
Entity ID: 9
MoleculeChains LengthOrganismImage
DNA (226-MER)I [auth T]215synthetic construct
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
SAH (Subject of Investigation/LOI)
Query on SAH

Download Ideal Coordinates CCD File 
P [auth E]S-ADENOSYL-L-HOMOCYSTEINE
C14 H20 N6 O5 S
ZJUKTBDSGOFHSH-WFMPWKQPSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX1.20.1_4487:

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Howard Hughes Medical Institute (HHMI)United States--

Revision History  (Full details and data files)

  • Version 1.0: 2024-09-25
    Type: Initial release
  • Version 1.1: 2024-10-09
    Changes: Data collection, Database references, Structure summary