7P4F

Crystal Structure of Monoamine Oxidase B in complex with inhibitor 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.163 

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Literature

Dual Reversible Coumarin Inhibitors Mutually Bound to Monoamine Oxidase B and Acetylcholinesterase Crystal Structures.

Ekstrom, F.Gottinger, A.Forsgren, N.Catto, M.Iacovino, L.G.Pisani, L.Binda, C.

(2022) ACS Med Chem Lett 13: 499-506

  • DOI: 10.1021/acsmedchemlett.2c00001
  • Primary Citation of Related Structures:  
    7P4F, 7P4H, 7QAK, 7QB4

  • PubMed Abstract: 
  • Multitarget directed ligands (MTDLs) represent a promising frontier in tackling the complexity of multifactorial pathologies. The synergistic inhibition of monoamine oxidase B (MAO B) and acetylcholinesterase (AChE) is believed to provide a potentiated effect in the treatment of Alzheimer's disease ...

    Multitarget directed ligands (MTDLs) represent a promising frontier in tackling the complexity of multifactorial pathologies. The synergistic inhibition of monoamine oxidase B (MAO B) and acetylcholinesterase (AChE) is believed to provide a potentiated effect in the treatment of Alzheimer's disease. Among previously reported micromolar or sub-micromolar coumarin-bearing dual inhibitors, compound 1 returned a tight-binding inhibition of MAO B ( K i = 4.5 μM) and a +5.5 °C increase in the enzyme T m value. Indeed, the X-ray crystal structure revealed that binding of 1 produces unforeseen conformational changes at the MAO B entrance cavity. Interestingly, 1 showed great shape complementarity with the AChE enzymatic gorge, being deeply buried from the catalytic anionic subsite (CAS) to the peripheral anionic subsite (PAS) and causing significant structural changes in the active site. These findings provide structural templates for further development of dual MAO B and AChE inhibitors.


    Organizational Affiliation

    Department of Biology and Biotechnology, University of Pavia, 27100 Pavia, Italy.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Amine oxidase [flavin-containing] BA, B520Homo sapiensMutation(s): 0 
Gene Names: MAOB
EC: 1.4.3.4
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P27338 (Homo sapiens)
Explore P27338 
Go to UniProtKB:  P27338
PHAROS:  P27338
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP27338
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FAD
Query on FAD

Download Ideal Coordinates CCD File 
C [auth A],
F [auth B]
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
5IK
Query on 5IK

Download Ideal Coordinates CCD File 
D [auth A],
G [auth B]
4-(hydroxymethyl)-7-[[4-[[methyl-(phenylmethyl)amino]methyl]phenyl]methoxy]chromen-2-one
C26 H25 N O4
RTJRBYKZQSYWCM-UHFFFAOYSA-N
 Ligand Interaction
C15
Query on C15

Download Ideal Coordinates CCD File 
E [auth A],
H [auth B]
N-DODECYL-N,N-DIMETHYL-3-AMMONIO-1-PROPANESULFONATE
C17 H38 N O3 S
IZWSFJTYBVKZNK-UHFFFAOYSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.163 
  • Space Group: C 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 131.243α = 90
b = 222.428β = 90
c = 86.206γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
Aimlessdata scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2022-05-18
    Type: Initial release