Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction | Predict Membrane 

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 120.75 kDa 
• Atom Count: 8490 
• Modelled Residue Count: 993 
• Deposited Residue Count: 1040 
• Unique protein chains: 1

7P4F

Crystal Structure of Monoamine Oxidase B in complex with inhibitor 1

• PDB DOI: 10.2210/pdb7P4F/pdb

• Classification: FLAVOPROTEIN
• Organism(s): Homo sapiens
• Expression System: Komagataella pastoris
• Mutation(s): No 
• Membrane Protein: Yes  PDBTM


• Deposited: 2021-07-11 Released: 2022-05-18 
• Deposition Author(s): Iacovino, L.G., Binda, C., Pisani, L.

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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 

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

• PubMed: 35300078 
• 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. 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Amine oxidase [flavin-containing] B	A, B	520	Homo sapiens	Mutation(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

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FAD	C [auth A], F [auth B]	FLAVIN-ADENINE DINUCLEOTIDE C27 H33 N9 O15 P2 VWWQXMAJTJZDQX-UYBVJOGSSA-N
5IK	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
C15	E [auth A], H [auth B]	N-DODECYL-N,N-DIMETHYL-3-AMMONIO-1-PROPANESULFONATE C17 H38 N O3 S IZWSFJTYBVKZNK-UHFFFAOYSA-O

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 = 131.243	α = 90
b = 222.428	β = 90
c = 86.206	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
Aimless	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2021-07-11 
• Released Date: 2022-05-18 
Deposition Author(s): Iacovino, L.G., Binda, C., Pisani, L.

Revision History  

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