7SCY

Nuc147 bound to single BRCT


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 1.0 of the entry. See complete history


Literature

The BRCT domain of PARP1 binds intact DNA and mediates intrastrand transfer.

Rudolph, J.Muthurajan, U.M.Palacio, M.Mahadevan, J.Roberts, G.Erbse, A.H.Dyer, P.N.Luger, K.

(2021) Mol Cell 81: 4994-5006.e5

  • DOI: https://doi.org/10.1016/j.molcel.2021.11.014
  • Primary Citation of Related Structures:  
    7SCY, 7SCZ

  • PubMed Abstract: 

    PARP1 is a key player in the response to DNA damage and is the target of clinical inhibitors for the treatment of cancers. Binding of PARP1 to damaged DNA leads to activation wherein PARP1 uses NAD + to add chains of poly(ADP-ribose) onto itself and other nuclear proteins. PARP1 also binds abundantly to intact DNA and chromatin, where it remains enzymatically inactive. We show that intact DNA makes contacts with the PARP1 BRCT domain, which was not previously recognized as a DNA-binding domain. This binding mode does not result in the concomitant reorganization and activation of the catalytic domain. We visualize the BRCT domain bound to nucleosomal DNA by cryogenic electron microscopy and identify a key motif conserved from ancestral BRCT domains for binding phosphates on DNA and phospho-peptides. Finally, we demonstrate that the DNA-binding properties of the BRCT domain contribute to the "monkey-bar mechanism" that mediates DNA transfer of PARP1.


  • Organizational Affiliation

    Department of Biochemistry, University of Colorado Boulder, Boulder, CO 80309, USA; Howard Hughes Medical Institute, University of Colorado Boulder, Boulder, CO 80309, USA. Electronic address: karolin.luger@colorado.edu.


Macromolecules

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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H3.1C [auth A],
G [auth E]
139Homo sapiensMutation(s): 0 
Gene Names: 
UniProt & NIH Common Fund Data Resources
Find proteins for P68431 (Homo sapiens)
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Go to UniProtKB:  P68431
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UniProt GroupP68431
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H4D [auth B],
H [auth F]
106Homo sapiensMutation(s): 0 
Gene Names: 
UniProt & NIH Common Fund Data Resources
Find proteins for P62805 (Homo sapiens)
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UniProt GroupP62805
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H2AE [auth C],
I [auth G]
133Homo sapiensMutation(s): 0 
Gene Names: HIST1H2ABHIST1H2AEhCG_1640984hCG_1787383
UniProt & NIH Common Fund Data Resources
Find proteins for P04908 (Homo sapiens)
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UniProt GroupP04908
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H2B type 1-JF [auth D],
J [auth H]
129Homo sapiensMutation(s): 0 
Gene Names: HIST1H2BJH2BFR
UniProt & NIH Common Fund Data Resources
Find proteins for P06899 (Homo sapiens)
Explore P06899 
Go to UniProtKB:  P06899
PHAROS:  P06899
GTEx:  ENSG00000124635 
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UniProt GroupP06899
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
Poly [ADP-ribose] polymerase 1131Homo sapiensMutation(s): 0 
Gene Names: PARP1ADPRTPPOL
EC: 2.4.2.30 (PDB Primary Data), 2.4.2 (PDB Primary Data)
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Find proteins for P09874 (Homo sapiens)
Explore P09874 
Go to UniProtKB:  P09874
GTEx:  ENSG00000143799 
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UniProt GroupP09874
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Entity ID: 1
MoleculeChains LengthOrganismImage
DNA (147-MER)A [auth I]147Homo sapiens
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Entity ID: 2
MoleculeChains LengthOrganismImage
DNA (147-MER)B [auth J]147Homo sapiens
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

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

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Cancer Institute (NIH/NCI)United States--

Revision History  (Full details and data files)

  • Version 1.0: 2022-01-12
    Type: Initial release