4WP7

Structure of human ALDH1A1 with inhibitor CM026


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.185 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Characterization of Two Distinct Structural Classes of Selective Aldehyde Dehydrogenase 1A1 Inhibitors.

Morgan, C.A.Hurley, T.D.

(2015) J.Med.Chem. 58: 1964-1975

  • DOI: 10.1021/jm501900s
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Aldehyde dehydrogenases (ALDH) catalyze the irreversible oxidation of aldehydes to their corresponding carboxylic acid. Alterations in ALDH1A1 activity are associated with such diverse diseases as cancer, Parkinson's disease, obesity, and cataracts. ...

    Aldehyde dehydrogenases (ALDH) catalyze the irreversible oxidation of aldehydes to their corresponding carboxylic acid. Alterations in ALDH1A1 activity are associated with such diverse diseases as cancer, Parkinson's disease, obesity, and cataracts. Inhibitors of ALDH1A1 could aid in illuminating the role of this enzyme in disease processes. However, there are no commercially available selective inhibitors for ALDH1A1. Here we characterize two distinct chemical classes of inhibitors that are selective for human ALDH1A1 compared to eight other ALDH isoenzymes. The prototypical members of each structural class, CM026 and CM037, exhibit submicromolar inhibition constants but have different mechanisms of inhibition. The crystal structures of these compounds bound to ALDH1A1 demonstrate that they bind within the aldehyde binding pocket of ALDH1A1 and exploit the presence of a unique glycine residue to achieve their selectivity. These two novel and selective ALDH1A1 inhibitors may serve as chemical tools to better understand the contributions of ALDH1A1 to normal biology and to disease states.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology Indiana University School of Medicine 635 Barnhill Drive, Indianapolis, Indiana 46202, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Retinal dehydrogenase 1
A
501Homo sapiensMutation(s): 1 
Gene Names: ALDH1A1 (ALDC, ALDH1, PUMB1)
EC: 1.2.1.-, 1.2.1.36
Find proteins for P00352 (Homo sapiens)
Go to Gene View: ALDH1A1
Go to UniProtKB:  P00352
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
3SR
Query on 3SR

Download SDF File 
Download CCD File 
A
8-{[4-(furan-2-ylcarbonyl)piperazin-1-yl]methyl}-1,3-dimethyl-7-(3-methylbutyl)-3,7-dihydro-1H-purine-2,6-dione
C22 H30 N6 O4
AGUUKKXWABRVBZ-UHFFFAOYSA-N
 Ligand Interaction
YB
Query on YB

Download SDF File 
Download CCD File 
A
YTTERBIUM (III) ION
Yb
AWSFICBXMUKWSK-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

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Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
3SRIC50: 800 nM (99) BINDINGDB
3SRKi: 720 - 800 nM (99) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.185 
  • Space Group: P 4 2 2
Unit Cell:
Length (Å)Angle (°)
a = 109.054α = 90.00
b = 109.054β = 90.00
c = 83.225γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute on Alcohol Abuse and AlcoholismUnited StatesR01AA018123

Revision History 

  • Version 1.0: 2015-02-11
    Type: Initial release
  • Version 1.1: 2015-03-11
    Type: Database references
  • Version 1.2: 2017-09-06
    Type: Author supporting evidence, Database references, Derived calculations, Other, Source and taxonomy, Structure summary