7CUN

The structure of human Integrator-PP2A complex


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 1.2 of the entry. See complete history


Literature

Identification of Integrator-PP2A complex (INTAC), an RNA polymerase II phosphatase.

Zheng, H.Qi, Y.Hu, S.Cao, X.Xu, C.Yin, Z.Chen, X.Li, Y.Liu, W.Li, J.Wang, J.Wei, G.Liang, K.Chen, F.X.Xu, Y.

(2020) Science 370

  • DOI: https://doi.org/10.1126/science.abb5872
  • Primary Citation of Related Structures:  
    7CUN

  • PubMed Abstract: 

    The 14-subunit metazoan-specific Integrator contains an endonuclease that cleaves nascent RNA transcripts. Here, we identified a complex containing Integrator and protein phosphatase 2A core enzyme (PP2A-AC), termed INTAC. The 3.5-angstrom-resolution structure reveals that nine human Integrator subunits and PP2A-AC assemble into a cruciform-shaped central scaffold formed by the backbone and shoulder modules, with the phosphatase and endonuclease modules flanking the opposite sides. As a noncanonical PP2A holoenzyme, the INTAC complex dephosphorylates the carboxy-terminal repeat domain of RNA polymerase II at serine-2, -5, and -7 and thus regulates transcription. Our study extends the function of PP2A to transcriptional regulation and reveals how dual enzymatic activities-RNA cleavage and RNA polymerase II dephosphorylation-are structurally and functionally integrated into the INTAC complex.


  • Organizational Affiliation

    Fudan University Shanghai Cancer Center, Institutes of Biomedical Sciences, State Key Laboratory of Genetic Engineering and Shanghai Key Laboratory of Medical Epigenetics, Shanghai Medical College of Fudan University, Shanghai 200032, China.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Integrator complex subunit 12,190Homo sapiensMutation(s): 0 
Gene Names: INTS1KIAA1440UNQ1821/PRO3434
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PHAROS:  Q8N201
GTEx:  ENSG00000164880 
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UniProt GroupQ8N201
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Integrator complex subunit 21,204Homo sapiensMutation(s): 0 
Gene Names: INTS2KIAA1287
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PHAROS:  Q9H0H0
GTEx:  ENSG00000108506 
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UniProt GroupQ9H0H0
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Integrator complex subunit 4C [auth D]963Homo sapiensMutation(s): 0 
Gene Names: INTS4MSTP093
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GTEx:  ENSG00000149262 
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UniProt GroupQ96HW7
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Integrator complex subunit 5D [auth E]1,019Homo sapiensMutation(s): 0 
Gene Names: INTS5KIAA1698
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GTEx:  ENSG00000185085 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Integrator complex subunit 6E [auth F]887Homo sapiensMutation(s): 0 
Gene Names: INTS6DBI1DDX26DDX26A
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GTEx:  ENSG00000102786 
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
Integrator complex subunit 7F [auth G]962Homo sapiensMutation(s): 0 
Gene Names: INTS7C1orf73
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GTEx:  ENSG00000143493 
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
Integrator complex subunit 8G [auth H]995Homo sapiensMutation(s): 0 
Gene Names: INTS8C8orf52
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GTEx:  ENSG00000164941 
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
Integrator complex subunit 9H [auth I]658Homo sapiensMutation(s): 0 
Gene Names: INTS9RC74
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GTEx:  ENSG00000104299 
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
Integrator complex subunit 11I [auth K]600Homo sapiensMutation(s): 0 
Gene Names: INTS11CPSF3LRC68
EC: 3.1.27
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GTEx:  ENSG00000127054 
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
PP2A-AJ [auth P]589Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000105568 
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
PP2A-CK [auth Q]309Homo sapiensMutation(s): 0 
EC: 3.1.3.16
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GTEx:  ENSG00000113575 
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
unknownL [auth U]594Homo sapiensMutation(s): 0 
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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 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-11-25
    Type: Initial release
  • Version 1.1: 2020-12-09
    Changes: Database references
  • Version 1.2: 2024-11-06
    Changes: Data collection, Database references, Structure summary