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 

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

  • 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 ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
E3 ubiquitin-protein ligase UHRF1
A, B
72Homo sapiensMutation(s): 0 
Gene Names: UHRF1 (ICBP90, NP95, RNF106)
EC: 2.3.2.27
Find proteins for Q96T88 (Homo sapiens)
Go to Gene View: UHRF1
Go to UniProtKB:  Q96T88
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Histone H3.1t N-terminal peptide
D
7Homo sapiensMutation(s): 0 
Gene Names: HIST3H3 (H3FT)
Find proteins for Q16695 (Homo sapiens)
Go to Gene View: HIST3H3
Go to UniProtKB:  Q16695
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.194 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 41.028α = 90.00
b = 41.028β = 90.00
c = 183.010γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
SHELXSphasing
HKL-2000data scaling
ADSCdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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