Crystal structure of human monoamine oxidase B in complex with styrylpiperidine analogue 84

Experimental Data Snapshot

  • Resolution: 1.70 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.182 

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Stereoselective Activity of 1-Propargyl-4-styrylpiperidine-like Analogues That Can Discriminate between Monoamine Oxidase Isoforms A and B.

Knez, D.Colettis, N.Iacovino, L.G.Sova, M.Pislar, A.Konc, J.Lesnik, S.Higgs, J.Kamecki, F.Mangialavori, I.Dolsak, A.Zakelj, S.Trontelj, J.Kos, J.Binda, C.Marder, M.Gobec, S.

(2020) J Med Chem 63: 1361-1387

  • DOI: https://doi.org/10.1021/acs.jmedchem.9b01886
  • Primary Citation of Related Structures:  
    6RKB, 6RKP, 6RLE

  • PubMed Abstract: 

    The resurgence of interest in monoamine oxidases (MAOs) has been fueled by recent correlations of this enzymatic activity with cardiovascular, neurological, and oncological disorders. This has promoted increased research into selective MAO-A and MAO-B inhibitors. Here, we shed light on how selective inhibition of MAO-A and MAO-B can be achieved by geometric isomers of cis- and trans -1-propargyl-4-styrylpiperidines. While the cis isomers are potent human MAO-A inhibitors, the trans analogues selectively target only the MAO-B isoform. The inhibition was studied by kinetic analysis, UV-vis spectrum measurements, and X-ray crystallography. The selective inhibition of the MAO-A and MAO-B isoforms was confirmed ex vivo in mouse brain homogenates, and additional in vivo studies in mice show the therapeutic potential of 1-propargyl-4-styrylpiperidines for central nervous system disorders. This study represents a unique case of stereoselective activity of cis / trans isomers that can discriminate between structurally related enzyme isoforms.

  • Organizational Affiliation

    Faculty of Pharmacy , University of Ljubljana , Aškerčeva 7 , 1000 Ljubljana , Slovenia.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Amine oxidase [flavin-containing] B
A, B
520Homo sapiensMutation(s): 0 
Gene Names: MAOB
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P27338 (Homo sapiens)
Explore P27338 
Go to UniProtKB:  P27338
PHAROS:  P27338
GTEx:  ENSG00000069535 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP27338
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on FAD

Download Ideal Coordinates CCD File 
C [auth A],
G [auth B]
C27 H33 N9 O15 P2
Query on C15

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E [auth A],
I [auth B]
C17 H38 N O3 S
Query on K72

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D [auth A],
H [auth B]
C17 H20 F3 N
Query on GOL

Download Ideal Coordinates CCD File 
F [auth A],
J [auth B]
C3 H8 O3
Experimental Data & Validation

Experimental Data

  • Resolution: 1.70 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.182 
  • Space Group: C 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 132.908α = 90
b = 223.657β = 90
c = 86.721γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Fondazione CARIPLOItaly2014-0672

Revision History  (Full details and data files)

  • Version 1.0: 2020-01-29
    Type: Initial release
  • Version 1.1: 2020-02-26
    Changes: Database references
  • Version 1.2: 2024-01-24
    Changes: Data collection, Database references, Derived calculations, Refinement description