1O5W

The structure basis of specific recognitions for substrates and inhibitors of rat monoamine oxidase A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.242 

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This is version 1.2 of the entry. See complete history


Literature

Structure of rat monoamine oxidase a and its specific recognitions for substrates and inhibitors.

Ma, J.Yoshimura, M.Yamashita, E.Nakagawa, A.Ito, A.Tsukihara, T.

(2004) J Mol Biol 338: 103-114

  • DOI: 10.1016/j.jmb.2004.02.032
  • Primary Citation of Related Structures:  
    1O5W

  • PubMed Abstract: 
  • Monoamine oxidase (MAO), a mitochondrial outer membrane enzyme, catalyzes the degradation of neurotransmitters in the central nervous system and is the target for anti-depression drug design. Two subtypes of MAO, MAOA and MAOB, are similar in primary sequences but have unique substrate and inhibitor specificities ...

    Monoamine oxidase (MAO), a mitochondrial outer membrane enzyme, catalyzes the degradation of neurotransmitters in the central nervous system and is the target for anti-depression drug design. Two subtypes of MAO, MAOA and MAOB, are similar in primary sequences but have unique substrate and inhibitor specificities. The structures of human MAOB complexed with various inhibitors were reported early. To understand the mechanisms of specific substrate and inhibitor recognitions of MAOA and MAOB, we have determined the crystal structure of rat MAOA complexed with the specific inhibitor, clorgyline, at 3.2A resolution. The comparison of the structures between MAOA and MAOB clearly explains the specificity of clorgyline for MAOA inhibition. The fitting of serotonin into the binding pockets of MAOs demonstrates that MAOB Tyr326 would block access of the 5-hydroxy group of serotonin into the enzyme. These results will lead to further understanding of the MAOA function and to new anti-depression drug design. This study also presents that MAOA has a transmembrane helix at the C-terminal region. This is the first crystal structure of membrane protein with an isolated transmembrane helix.


    Organizational Affiliation

    Institute for Protein Research, Osaka University, Yamadaoka 3-2, Suita, Osaka 565-0871, Japan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Amine oxidase [flavin-containing] AA, B, C, D534Rattus norvegicusMutation(s): 0 
Gene Names: Maoa
EC: 1.4.3.4
Membrane Entity: Yes 
UniProt
Find proteins for P21396 (Rattus norvegicus)
Explore P21396 
Go to UniProtKB:  P21396
Protein Feature View
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  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
MLG BindingDB:  1O5W Ki: min: 12, max: 1200 (nM) from 5 assay(s)
IC50: min: 4.90e-3, max: 40 (nM) from 49 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.242 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 157.56α = 90
b = 157.56β = 90
c = 257.84γ = 90
Software Package:
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
CCP4data scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-04-20
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance