ISDA

Deposition Date 2018-01-05

Release Date 2018-01-24

Last Version Date 2025-04-09

Entry Detail

PDB ID:

6C23

Keywords:

GENE REGULATION

Title:

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

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Trichoplusia ni

Method Details:

Experimental Method:

ELECTRON MICROSCOPY

Resolution:

3.90 Å

Aggregation State:

PARTICLE

Reconstruction Method:

SINGLE PARTICLE

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Polycomb protein SUZ12
Gene (Uniprot):SUZ12
Chain IDs:A, E (auth: M), I (auth: Q)
Chain Length:739
Number of Molecules:3
Biological Source:Homo sapiens

UniProt ID:Q15022 Pfam ID:PF09733

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Protein Jumonji
Gene (Uniprot):JARID2
Chain IDs:L (auth: B)
Chain Length:345
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:Q92833

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Protein Jumonji
Gene (Uniprot):JARID2
Chain IDs:B (auth: E)
Chain Length:348
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:Q92833

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Histone-lysine N-methyltransferase EZH2
Gene (Uniprot):EZH2
Chain IDs:C (auth: K), K (auth: C)
Chain Length:746
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:Q15910 Pfam ID:PF11616, PF18118, PF21358, PF18264, PF00856 EC:2.1.1.356

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Polycomb protein EED
Gene (Uniprot):EED
Chain IDs:D (auth: L)
Chain Length:441
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:O75530 Pfam ID:PF00400

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Histone-binding protein RBBP4
Gene (Uniprot):RBBP4
Chain IDs:F (auth: N)
Chain Length:425
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:Q09028 Pfam ID:PF12265, PF00400

Polymer Type:polypeptide(L)
Molecule:JARID2-substrate
Chain IDs:G (auth: O)
Chain Length:7
Number of Molecules:1
Biological Source:Homo sapiens

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Zinc finger protein AEBP2
Gene (Uniprot):AEBP2
Chain IDs:H (auth: P)
Chain Length:295
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:Q6ZN18

Polymer Type:polypeptide(L)
Molecule:SUZ12
Chain IDs:J (auth: Z)
Chain Length:135
Number of Molecules:1
Biological Source:Homo sapiens

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details	2D Image
M3L	L	LYS	modified residue

Ligand Molecules

Primary Citation

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.Show

Science 359 940 944 (2018)

PMID: 29348366 DOI: 10.1126/science.aar5700

Abstact

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.

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