6HSK

Crystal structure of a human HDAC8 L6 loop mutant complexed with Quisinostat


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.096 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.152 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Characterization of Histone Deacetylase 8 (HDAC8) Selective Inhibition Reveals Specific Active Site Structural and Functional Determinants.

Marek, M.Shaik, T.B.Heimburg, T.Chakrabarti, A.Lancelot, J.Ramos-Morales, E.Da Veiga, C.Kalinin, D.Melesina, J.Robaa, D.Schmidtkunz, K.Suzuki, T.Holl, R.Ennifar, E.Pierce, R.J.Jung, M.Sippl, W.Romier, C.

(2018) J. Med. Chem. 61: 10000-10016

  • DOI: 10.1021/acs.jmedchem.8b01087
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Metal-dependent histone deacetylases (HDACs) are key epigenetic regulators that represent promising therapeutic targets for the treatment of numerous human diseases. Yet the currently FDA-approved HDAC inhibitors nonspecifically target at least sever ...

    Metal-dependent histone deacetylases (HDACs) are key epigenetic regulators that represent promising therapeutic targets for the treatment of numerous human diseases. Yet the currently FDA-approved HDAC inhibitors nonspecifically target at least several of the 11 structurally similar but functionally different HDAC isozymes, which hampers their broad usage in clinical settings. Selective inhibitors targeting single HDAC isozymes are being developed, but precise understanding in molecular terms of their selectivity remains sparse. Here, we show that HDAC8-selective inhibitors adopt a L-shaped conformation required for their binding to a HDAC8-specific pocket formed by HDAC8 catalytic tyrosine and HDAC8 L1 and L6 loops. In other HDAC isozymes, a L1-L6 lock sterically prevents L-shaped inhibitor binding. Shielding of the HDAC8-specific pocket by protein engineering decreases potency of HDAC8-selective inhibitors and affects catalytic activity. Collectively, our results unravel key HDAC8 active site structural and functional determinants important for the design of next-generation chemical probes and epigenetic drugs.


    Organizational Affiliation

    Institut de Génétique et Biologie Moléculaire et Cellulaire (IGBMC), Département de Biologie Structurale Intégrative , Université de Strasbourg, Centre National de la Recherche Scientifique (CNRS UMR7104), Institut National de la Santé et de la Recherche Médicale (INSERM U1258) , 1 rue Laurent Fries , 67404 Illkirch Cedex , France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Histone deacetylase 8
A, B
380Homo sapiensMutation(s): 0 
Gene Names: HDAC8 (HDACL1)
EC: 3.5.1.98
Find proteins for Q9BY41 (Homo sapiens)
Go to Gene View: HDAC8
Go to UniProtKB:  Q9BY41
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
K
Query on K

Download SDF File 
Download CCD File 
A, B
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
ZN
Query on ZN

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

Download SDF File 
Download CCD File 
A, B
2-[4-[[(1-methylindol-3-yl)methylamino]methyl]piperidin-1-yl]-~{N}-oxidanyl-pyrimidine-5-carboxamide
C21 H26 N6 O2
PAWIYAYFNXQGAP-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.096 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.152 
  • Space Group: P 32
Unit Cell:
Length (Å)Angle (°)
a = 106.390α = 90.00
b = 106.390β = 90.00
c = 82.030γ = 120.00
Software Package:
Software NamePurpose
PHENIXrefinement
PHENIXphasing
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European CommissionFrance241865
European CommissionFrance602080

Revision History 

  • Version 1.0: 2018-10-31
    Type: Initial release
  • Version 1.1: 2018-11-07
    Type: Data collection, Database references
  • Version 1.2: 2018-11-14
    Type: Data collection, Structure summary
  • Version 1.3: 2018-11-28
    Type: Data collection, Database references