2RC4

Crystal Structure of the HAT domain of the human MOZ protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.276 
  • R-Value Observed: 0.277 

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This is version 1.4 of the entry. See complete history


Literature

The human monocytic leukemia zinc finger histone acetyltransferase domain contains DNA-binding activity implicated in chromatin targeting.

Holbert, M.A.Sikorski, T.Carten, J.Snowflack, D.Hodawadekar, S.Marmorstein, R.

(2007) J Biol Chem 282: 36603-36613

  • DOI: https://doi.org/10.1074/jbc.M705812200
  • Primary Citation of Related Structures:  
    2RC4

  • PubMed Abstract: 

    The human monocytic leukemia zinc finger (MOZ) protein is an essential transcriptional coactivator and histone acetyltransferase (HAT) that plays a primary role in the differentiation of erythroid and myeloid cells and is required to maintain hematopoietic stem cells. Chromosomal translocations involving the HAT-encoded region are also associated with acute myeloid leukemia. Here we present the x-ray crystal structure of the MOZ HAT domain and related biochemical studies. We find that the HAT domain contains a central region that is structurally and functionally conserved with the yeast MYST HAT protein Esa1, but contains more divergent N- and C-terminal regions harboring a TFIIIA-type zinc finger and helix-turn-helix DNA-binding motifs. Solution DNA-binding and acetyltransferase activity assays, in concert with mutagenesis, confirm that the MOZ HAT domain binds strongly to DNA through the zinc finger and helix-turn-helix motifs and that DNA binding and catalysis are not mutually exclusive. Consistent with the DNA-binding properties of MOZ, we also show that MOZ is able to acetylate nucleosomes and free histones equally well, whereas other HATs prefer free histones. Our results reveal, for the first time, that enzymatic and DNA-targeting activities can be contained within the same chromatin regulatory domain.


  • Organizational Affiliation

    The Wistar Institute and Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-0381, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Histone acetyltransferase MYST3287Homo sapiensMutation(s): 0 
Gene Names: MYST3MOZRUNXBP2ZNF220
EC: 2.3.1.48 (PDB Primary Data), 2.3.1 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for Q92794 (Homo sapiens)
Explore Q92794 
Go to UniProtKB:  Q92794
PHAROS:  Q92794
GTEx:  ENSG00000083168 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ92794
Sequence Annotations
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.276 
  • R-Value Observed: 0.277 
  • Space Group: I 4 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 109.2α = 90
b = 109.2β = 90
c = 144.779γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
SCALEPACKdata scaling
SOLVEphasing
CNSrefinement
DENZOdata reduction
PDB_EXTRACTdata extraction

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-11-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Refinement description
  • Version 1.3: 2019-07-24
    Changes: Data collection, Refinement description
  • Version 1.4: 2024-02-21
    Changes: Data collection, Database references, Derived calculations