4Q6F

Crystal structure of human BAZ2A PHD zinc finger in complex with unmodified H3K4 histone peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.91 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.185 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Molecular basis of histone tail recognition by human TIP5 PHD finger and bromodomain of the chromatin remodeling complex NoRC.

Tallant, C.Valentini, E.Fedorov, O.Overvoorde, L.Ferguson, F.M.Filippakopoulos, P.Svergun, D.I.Knapp, S.Ciulli, A.

(2015) Structure 23: 80-92

  • DOI: https://doi.org/10.1016/j.str.2014.10.017
  • Primary Citation of Related Structures:  
    4LZ2, 4Q6F, 4QBM, 4QC1, 4QC3, 4QF2, 4QF3

  • PubMed Abstract: 

    Binding of the chromatin remodeling complex NoRC to RNA complementary to the rDNA promoter mediates transcriptional repression. TIP5, the largest subunit of NoRC, is involved in recruitment to rDNA by interactions with promoter-bound TTF-I, pRNA, and acetylation of H4K16. TIP5 domains that recognize posttranslational modifications on histones are essential for recruitment of NoRC to chromatin, but how these reader modules recognize site-specific histone tails has remained elusive. Here, we report crystal structures of PHD zinc finger and bromodomains from human TIP5 and BAZ2B in free form and bound to H3 and/or H4 histones. PHD finger functions as an independent structural module in recognizing unmodified H3 histone tails, and the bromodomain prefers H3 and H4 acetylation marks followed by a key basic residue, KacXXR. Further low-resolution analyses of PHD-bromodomain modules provide molecular insights into their trans histone tail recognition, required for nucleosome recruitment and transcriptional repression of the NoRC complex.


  • Organizational Affiliation

    Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK; Structural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, Oxford OX3 7DQ, UK; Target Discovery Institute, Nuffield Department of Clinical Medicine, University of Oxford, NDM Research Building, Roosevelt Drive, Oxford OX3 7FZ, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Bromodomain adjacent to zinc finger domain protein 2A
A, B, C, D
58Homo sapiensMutation(s): 0 
Gene Names: BAZ2AKIAA0314TIP5
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UIF9 (Homo sapiens)
Explore Q9UIF9 
Go to UniProtKB:  Q9UIF9
PHAROS:  Q9UIF9
GTEx:  ENSG00000076108 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9UIF9
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
unmodified H3K4 peptideE [auth F],
F [auth G],
G [auth H]
5N/AMutation(s): 0 
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
H [auth A]
I [auth A]
K [auth B]
L [auth B]
N [auth C]
H [auth A],
I [auth A],
K [auth B],
L [auth B],
N [auth C],
O [auth C],
P [auth D],
Q [auth D]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
EDO
Query on EDO

Download Ideal Coordinates CCD File 
J [auth A],
M [auth B],
R [auth D]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.91 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.185 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.866α = 90
b = 71.866β = 90
c = 98.767γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
PHASERphasing
REFMACrefinement
XDSdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2014-05-21
    Type: Initial release
  • Version 1.1: 2015-04-22
    Changes: Database references
  • Version 1.2: 2024-02-28
    Changes: Data collection, Database references, Derived calculations