2RC4

Crystal Structure of the HAT domain of the human MOZ protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.276 

wwPDB Validation 3D Report Full Report


This is version 1.2 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: 10.1074/jbc.M705812200

  • 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 hematop ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Histone acetyltransferase MYST3
A
287Homo sapiensMutation(s): 0 
Gene Names: KAT6A (MOZ, MYST3, RUNXBP2, ZNF220)
EC: 2.3.1.48
Find proteins for Q92794 (Homo sapiens)
Go to Gene View: KAT6A
Go to UniProtKB:  Q92794
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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

Download SDF File 
Download CCD File 
A
ACETYL COENZYME *A
C23 H38 N7 O17 P3 S
ZSLZBFCDCINBPY-ZSJPKINUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.276 
  • Space Group: I 4 2 2
Unit Cell:
Length (Å)Angle (°)
a = 109.200α = 90.00
b = 109.200β = 90.00
c = 144.779γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
PDB_EXTRACTdata extraction
REFMACrefinement
SCALEPACKdata scaling
SOLVEphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-11-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.2: 2017-10-25
    Type: Refinement description