3T6R

Structure of UHRF1 in complex with unmodified H3 N-terminal tail


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.195 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

UHRF1 double tudor domain and the adjacent PHD finger act together to recognize K9me3-containing histone H3 tail

Xie, S.Jakoncic, J.Qian, C.M.

(2012) J Mol Biol 415: 318-328

  • DOI: 10.1016/j.jmb.2011.11.012
  • Primary Citation of Related Structures:  
    3T6R

  • PubMed Abstract: 
  • Human multi-domain-containing protein UHRF1 has recently been extensively characterized as a key epigenetic regulator for maintaining DNA methylation patterns. UHRF1 SRA domain preferentially binds to hemimethylated CpG sites, and double Tudor domain has been implicated in recognizing H3K9me3 mark, but the role of the adjacent PHD finger remains unclear ...

    Human multi-domain-containing protein UHRF1 has recently been extensively characterized as a key epigenetic regulator for maintaining DNA methylation patterns. UHRF1 SRA domain preferentially binds to hemimethylated CpG sites, and double Tudor domain has been implicated in recognizing H3K9me3 mark, but the role of the adjacent PHD finger remains unclear. Here, we report the high-resolution crystal structure of UHRF1 PHD finger in complex with N-terminal tail of histone H3. We found that the preceding zinc-Cys4 knuckle is indispensable for the PHD finger of UHRF1 to recognize the first four unmodified residues of histone H3 N-terminal tail. Quantitative binding studies indicated that UHRF1 PHD finger (including the preceding zinc-Cys4 knuckle) acts together with the adjacent double Tudor domain to specifically recognize the H3K9me3 mark. Combinatorial recognition of H3K9me3-containing histone H3 tail by UHRF1 PHD finger and double Tudor domain may play a role in establishing and maintaining histone H3K9 methylation patterns during the cell cycle.


    Organizational Affiliation

    Department of Biochemistry, The University of Hong Kong, Hong Kong, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
E3 ubiquitin-protein ligase UHRF1A, B72Homo sapiensMutation(s): 0 
Gene Names: UHRF1ICBP90NP95RNF106
EC: 2.3.2.27
Find proteins for Q96T88 (Homo sapiens)
Explore Q96T88 
Go to UniProtKB:  Q96T88
NIH Common Fund Data Resources
PHAROS:  Q96T88
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Histone H3.1t N-terminal peptideC [auth D]7Homo sapiensMutation(s): 0 
Gene Names: H3-4H3FTHIST3H3
Find proteins for Q16695 (Homo sapiens)
Explore Q16695 
Go to UniProtKB:  Q16695
NIH Common Fund Data Resources
PHAROS:  Q16695
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.195 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.028α = 90
b = 41.028β = 90
c = 183.01γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
SHELXSphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-11-23
    Type: Initial release
  • Version 1.1: 2013-07-03
    Changes: Database references