7T7T

Structure of TSK/BRU1 bound to histone H3.1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.17 Å
  • R-Value Free: 0.318 
  • R-Value Work: 0.279 
  • R-Value Observed: 0.282 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

The histone H3.1 variant regulates TONSOKU-mediated DNA repair during replication.

Davarinejad, H.Huang, Y.C.Mermaz, B.LeBlanc, C.Poulet, A.Thomson, G.Joly, V.Munoz, M.Arvanitis-Vigneault, A.Valsakumar, D.Villarino, G.Ross, A.Rotstein, B.H.Alarcon, E.I.Brunzelle, J.S.Voigt, P.Dong, J.Couture, J.F.Jacob, Y.

(2022) Science 375: 1281-1286

  • DOI: https://doi.org/10.1126/science.abm5320
  • Primary Citation of Related Structures:  
    7T7T

  • PubMed Abstract: 
  • The tail of replication-dependent histone H3.1 varies from that of replication-independent H3.3 at the amino acid located at position 31 in plants and animals, but no function has been assigned to this residue to demonstrate a unique and conserved role for H3 ...

    The tail of replication-dependent histone H3.1 varies from that of replication-independent H3.3 at the amino acid located at position 31 in plants and animals, but no function has been assigned to this residue to demonstrate a unique and conserved role for H3.1 during replication. We found that TONSOKU (TSK/TONSL), which rescues broken replication forks, specifically interacts with H3.1 via recognition of alanine 31 by its tetratricopeptide repeat domain. Our results indicate that genomic instability in the absence of ATXR5/ATXR6-catalyzed histone H3 lysine 27 monomethylation in plants depends on H3.1, TSK, and DNA polymerase theta (Pol θ). This work reveals an H3.1-specific function during replication and a common strategy used in multicellular eukaryotes for regulating post-replicative chromatin maturation and TSK, which relies on histone monomethyltransferases and reading of the H3.1 variant.


    Organizational Affiliation

    Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06511, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein TONSOKU
A, B
531Citrus unshiuMutation(s): 0 
Gene Names: CUMW_187040TSK
UniProt
Find proteins for A0A2H5Q1B8 (Citrus unshiu)
Explore A0A2H5Q1B8 
Go to UniProtKB:  A0A2H5Q1B8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A2H5Q1B8
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Histone H3.1C [auth X],
D [auth W]
45Arabidopsis thalianaMutation(s): 0 
Gene Names: 
UniProt
Find proteins for P59226 (Arabidopsis thaliana)
Explore P59226 
Go to UniProtKB:  P59226
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP59226
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.17 Å
  • R-Value Free: 0.318 
  • R-Value Work: 0.279 
  • R-Value Observed: 0.282 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.89α = 90
b = 92.33β = 90
c = 209.91γ = 90
Software Package:
Software NamePurpose
SHELXDEphasing
HKL-2000data scaling
HKL-2000data reduction
PHENIXrefinement
Cootmodel building

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Natural Sciences and Engineering Research Council (NSERC, Canada)Canada--

Revision History  (Full details and data files)

  • Version 1.0: 2022-03-30
    Type: Initial release