5JA4

Crystal structure of human TONSL and MCM2 HBDs binding to a histone H3-H4 tetramer


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.42 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.203 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

H4K20me0 marks post-replicative chromatin and recruits the TONSL-MMS22L DNA repair complex.

Saredi, G.Huang, H.Hammond, C.M.Alabert, C.Bekker-Jensen, S.Forne, I.Reveron-Gomez, N.Foster, B.M.Mlejnkova, L.Bartke, T.Cejka, P.Mailand, N.Imhof, A.Patel, D.J.Groth, A.

(2016) Nature 534: 714-718

  • DOI: 10.1038/nature18312
  • Primary Citation of Related Structures:  
    5JA4

  • PubMed Abstract: 
  • After DNA replication, chromosomal processes including DNA repair and transcription take place in the context of sister chromatids. While cell cycle regulation can guide these processes globally, mechanisms to distinguish pre- and post-replicative st ...

    After DNA replication, chromosomal processes including DNA repair and transcription take place in the context of sister chromatids. While cell cycle regulation can guide these processes globally, mechanisms to distinguish pre- and post-replicative states locally remain unknown. Here we reveal that new histones incorporated during DNA replication provide a signature of post-replicative chromatin, read by the human TONSL–MMS22L homologous recombination complex. We identify the TONSL ankyrin repeat domain (ARD) as a reader of histone H4 tails unmethylated at K20 (H4K20me0), which are specific to new histones incorporated during DNA replication and mark post-replicative chromatin until the G2/M phase of the cell cycle. Accordingly, TONSL–MMS22L binds new histones H3–H4 both before and after incorporation into nucleosomes, remaining on replicated chromatin until late G2/M. H4K20me0 recognition is required for TONSL–MMS22L binding to chromatin and accumulation at challenged replication forks and DNA lesions. Consequently, TONSL ARD mutants are toxic, compromising genome stability, cell viability and resistance to replication stress. Together, these data reveal a histone-reader-based mechanism for recognizing the post-replicative state, offering a new angle to understand DNA repair with the potential for targeted cancer therapy.


    Organizational Affiliation

    Biotech Research and Innovation Centre (BRIC), Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Histone H3.3A79Homo sapiensMutation(s): 0 
Gene Names: H3F3AH3.3AH3F3PP781H3F3BH3.3BH3-3AH3-3B
Find proteins for P84243 (Homo sapiens)
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Go to UniProtKB:  P84243
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PHAROS  P84243
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Histone H4B102Homo sapiensMutation(s): 0 
Gene Names: 
Find proteins for P62805 (Homo sapiens)
Explore P62805 
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PHAROS  P62805
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
DNA replication licensing factor MCM2C70Homo sapiensMutation(s): 0 
Gene Names: MCM2BM28CCNL1CDCL1KIAA0030
EC: 3.6.4.12
Find proteins for P49736 (Homo sapiens)
Explore P49736 
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PHAROS  P49736
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Tonsoku-like proteinD181Homo sapiensMutation(s): 0 
Gene Names: TONSLIKBRNFKBIL2
Find proteins for Q96HA7 (Homo sapiens)
Explore Q96HA7 
Go to UniProtKB:  Q96HA7
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PHAROS  Q96HA7
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MES
Query on MES

Download Ideal Coordinates CCD File 
A
2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

Download Ideal Coordinates CCD File 
B
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.42 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.203 
  • Space Group: P 3 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 139.506α = 90
b = 139.506β = 90
c = 72.896γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2016-04-11 
  • Released Date: 2016-06-15 
  • Deposition Author(s): Huang, H., Patel, D.

Revision History 

  • Version 1.0: 2016-06-15
    Type: Initial release
  • Version 1.1: 2016-07-06
    Changes: Database references
  • Version 1.2: 2016-07-13
    Changes: Database references