7LNY

Apo structure of the Histone chaperone ASF1A residues 1-155

  • Classification: CELL CYCLE
  • Organism(s): Homo sapiens
  • Expression System: Escherichia coli
  • Mutation(s): No 

  • Deposited: 2021-02-08 Released: 2022-02-16 
  • Deposition Author(s): Simon, B., Boggon, T.J., Calderwood, D., Turk, B.E.
  • Funding Organization(s): American Heart Association, National Institutes of Health/National Center for Advancing Translational Sciences (NIH/NCATS), National Institutes of Health/National Cancer Institute (NIH/NCI)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.221 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Tousled-like kinase 2 targets ASF1 histone chaperones through client mimicry.

Simon, B.Lou, H.J.Huet-Calderwood, C.Shi, G.Boggon, T.J.Turk, B.E.Calderwood, D.A.

(2022) Nat Commun 13: 749-749

  • DOI: https://doi.org/10.1038/s41467-022-28427-0
  • Primary Citation of Related Structures:  
    7LNY, 7LO0

  • PubMed Abstract: 

    Tousled-like kinases (TLKs) are nuclear serine-threonine kinases essential for genome maintenance and proper cell division in animals and plants. A major function of TLKs is to phosphorylate the histone chaperone proteins ASF1a and ASF1b to facilitate DNA replication-coupled nucleosome assembly, but how TLKs selectively target these critical substrates is unknown. Here, we show that TLK2 selectivity towards ASF1 substrates is achieved in two ways. First, the TLK2 catalytic domain recognizes consensus phosphorylation site motifs in the ASF1 C-terminal tail. Second, a short sequence at the TLK2 N-terminus docks onto the ASF1a globular N-terminal domain in a manner that mimics its histone H3 client. Disrupting either catalytic or non-catalytic interactions through mutagenesis hampers ASF1 phosphorylation by TLK2 and cell growth. Our results suggest that the stringent selectivity of TLKs for ASF1 is enforced by an unusual interaction mode involving mutual recognition of a short sequence motifs by both kinase and substrate.


  • Organizational Affiliation

    Department of Pharmacology, Yale School of Medicine, New Haven, CT, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Histone chaperone ASF1A
A, B, C, D, E
A, B, C, D, E, F, G
157Homo sapiensMutation(s): 0 
Gene Names: ASF1ACGI-98HSPC146
UniProt & NIH Common Fund Data Resources
Find proteins for Q9Y294 (Homo sapiens)
Explore Q9Y294 
Go to UniProtKB:  Q9Y294
PHAROS:  Q9Y294
GTEx:  ENSG00000111875 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9Y294
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.221 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 142.282α = 90
b = 118.98β = 103.45
c = 109.506γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
American Heart AssociationUnited States18POST33960340
National Institutes of Health/National Center for Advancing Translational Sciences (NIH/NCATS)United States1R03TR002912-01
National Institutes of Health/National Cancer Institute (NIH/NCI)United StatesP50 CA196530

Revision History  (Full details and data files)

  • Version 1.0: 2022-02-16
    Type: Initial release
  • Version 1.1: 2023-10-18
    Changes: Data collection, Refinement description