4ZBJ

UBN1 peptide bound to H3.3/H4/Asf1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.209 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Ubinuclein-1 confers histone H3.3-specific-binding by the HIRA histone chaperone complex.

Daniel Ricketts, M.Frederick, B.Hoff, H.Tang, Y.Schultz, D.C.Singh Rai, T.Grazia Vizioli, M.Adams, P.D.Marmorstein, R.

(2015) Nat Commun 6: 7711-7711

  • DOI: 10.1038/ncomms8711
  • Primary Citation of Related Structures:  
    4ZBJ

  • PubMed Abstract: 
  • Histone chaperones bind specific histones to mediate their storage, eviction or deposition from/or into chromatin. The HIRA histone chaperone complex, composed of HIRA, ubinuclein-1 (UBN1) and CABIN1, cooperates with the histone chaperone ASF1a to mediate H3 ...

    Histone chaperones bind specific histones to mediate their storage, eviction or deposition from/or into chromatin. The HIRA histone chaperone complex, composed of HIRA, ubinuclein-1 (UBN1) and CABIN1, cooperates with the histone chaperone ASF1a to mediate H3.3-specific binding and chromatin deposition. Here we demonstrate that the conserved UBN1 Hpc2-related domain (HRD) is a novel H3.3-specific-binding domain. Biochemical and biophysical studies show the UBN1-HRD preferentially binds H3.3/H4 over H3.1/H4. X-ray crystallographic and mutational studies reveal that conserved residues within the UBN1-HRD and H3.3 G90 as key determinants of UBN1-H3.3-binding specificity. Comparison of the structure with the unrelated H3.3-specific chaperone DAXX reveals nearly identical points of contact between the chaperone and histone in the proximity of H3.3 G90, although the mechanism for H3.3 G90 recognition appears to be distinct. This study points to UBN1 as the determinant of H3.3-specific binding and deposition by the HIRA complex.


    Organizational Affiliation

    1] Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [2] Graduate Group in Biochemistry and Molecular Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA [3] Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Histone chaperone ASF1A175Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: ASF1CIA1YJL115WJ0755
UniProt
Find proteins for P32447 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P32447 
Go to UniProtKB:  P32447
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Histone H3B77Xenopus laevisMutation(s): 1 
UniProt
Find proteins for Q6PI79 (Xenopus laevis)
Explore Q6PI79 
Go to UniProtKB:  Q6PI79
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Histone H4C84Xenopus laevisMutation(s): 0 
UniProt
Find proteins for P62799 (Xenopus laevis)
Explore P62799 
Go to UniProtKB:  P62799
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Ubinuclein-1D28Homo sapiensMutation(s): 0 
Gene Names: UBN1
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NPG3 (Homo sapiens)
Explore Q9NPG3 
Go to UniProtKB:  Q9NPG3
PHAROS:  Q9NPG3
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.209 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.024α = 90
b = 90.024β = 90
c = 120.734γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-3000data reduction
HKL-3000data scaling
PHENIXphasing

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute on Aging (NIH/NIA)United StatesAG031862
American Heart AssociationUnited States12PRE12030157

Revision History  (Full details and data files)

  • Version 1.0: 2015-07-15
    Type: Initial release
  • Version 1.1: 2015-07-29
    Changes: Database references
  • Version 1.2: 2017-09-13
    Changes: Author supporting evidence, Derived calculations, Source and taxonomy
  • Version 1.3: 2019-12-18
    Changes: Author supporting evidence