6C24

Cryo-EM structure of PRC2 bound to cofactors AEBP2 and JARID2 in the Extended Active State

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.6 of the entry. See complete history. 


Literature

Structures of human PRC2 with its cofactors AEBP2 and JARID2.

Kasinath, V., Faini, M., Poepsel, S., Reif, D., Feng, X.A., Stjepanovic, G., Aebersold, R., Nogales, E.

(2018) Science 359: 940-944

  • DOI: 10.1126/science.aar5700
  • Primary Citation of Related Structures:  
    6C23, 6C24

  • PubMed Abstract: 

    • Transcriptionally repressive histone H3 lysine 27 methylation by Polycomb repressive complex 2 (PRC2) is essential for cellular differentiation and development. Here we report cryo-electron microscopy structures of human PRC2 in a basal state and two distinct active states while in complex with its cofactors JARID2 and AEBP2 ...

    Transcriptionally repressive histone H3 lysine 27 methylation by Polycomb repressive complex 2 (PRC2) is essential for cellular differentiation and development. Here we report cryo-electron microscopy structures of human PRC2 in a basal state and two distinct active states while in complex with its cofactors JARID2 and AEBP2. Both cofactors mimic the binding of histone H3 tails. JARID2, methylated by PRC2, mimics a methylated H3 tail to stimulate PRC2 activity, whereas AEBP2 interacts with the RBAP48 subunit, mimicking an unmodified H3 tail. SUZ12 interacts with all other subunits within the assembly and thus contributes to the stability of the complex. Our analysis defines the complete architecture of a functionally relevant PRC2 and provides a structural framework to understand its regulation by cofactors, histone tails, and RNA.

    Organizational Affiliation: 

    Howard Hughes Medical Institute, University of California, Berkeley, CA 94720, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Polycomb protein SUZ12A,
F [auth M],
J [auth Q]		739Homo sapiensMutation(s): 0 
Gene Names: SUZ12, CHET9, JJAZ1, KIAA0160
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UniProt GroupQ15022
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Protein JumonjiB345Homo sapiensMutation(s): 0 
Gene Names: JARID2, JMJ
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Protein JumonjiC [auth E]345Homo sapiensMutation(s): 0 
Gene Names: JARID2, JMJ
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Histone-lysine N-methyltransferase EZH2L [auth C],
D [auth K]		746Homo sapiensMutation(s): 0 
Gene Names: EZH2, KMT6
EC: 2.1.1.43 (PDB Primary Data), 2.1.1.356 (UniProt)
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Polycomb protein EEDE [auth L]441Homo sapiensMutation(s): 0 
Gene Names: EED
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Histone-binding protein RBBP4G [auth N]425Homo sapiensMutation(s): 0 
Gene Names: RBBP4, RBAP48
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
JARID2-substrateH [auth O]7Homo sapiensMutation(s): 0 
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
Zinc finger protein AEBP2I [auth P]295Homo sapiensMutation(s): 0 
Gene Names: AEBP2
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
SUZ12K [auth Z]135Homo sapiensMutation(s): 0 
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Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
M3L
Query on M3L		B L-PEPTIDE LINKINGC9 H21 N2 O2LYS
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Howard Hughes Medical Institute (HHMI)United States--
European Research Council (ERC)European Union233226
European Research Council (ERC)European Union670821

Revision History  (Full details and data files)

  • Version 1.0: 2018-01-24
    Type: Initial release
  • Version 1.1: 2018-01-31
    Changes: Database references
  • Version 1.2: 2018-02-14
    Changes: Author supporting evidence
  • Version 1.3: 2018-03-07
    Changes: Database references
  • Version 1.4: 2018-10-03
    Changes: Data collection, Refinement description
  • Version 1.5: 2019-11-20
    Changes: Author supporting evidence
  • Version 1.6: 2019-12-18
    Changes: Other