7QUN

CryoEM structure of mammalian AAP in complex with Meropenem


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A carbapenem antibiotic inhibiting a mammalian serine protease: structure of the acylaminoacyl peptidase-meropenem complex.

Kiss-Szeman, A.J.Takacs, L.Orgovan, Z.Straner, P.Jakli, I.Schlosser, G.Masiulis, S.Harmat, V.Menyhard, D.K.Perczel, A.

(2022) Chem Sci 13: 14264-14276

  • DOI: https://doi.org/10.1039/d2sc05520a
  • Primary Citation of Related Structures:  
    7QUN

  • PubMed Abstract: 

    The structure of porcine AAP (pAAP) in a covalently bound complex with meropenem was determined by cryo-EM to 2.1 Å resolution, showing the mammalian serine-protease inhibited by a carbapenem antibiotic. AAP is a modulator of the ubiquitin-proteasome degradation system and the site of a drug-drug interaction between the widely used antipsychotic, valproate and carbapenems. The active form of pAAP - a toroidal tetramer - binds four meropenem molecules covalently linked to the catalytic Ser587 of the serine-protease triad, in an acyl-enzyme state. AAP is hindered from fully processing the antibiotic by the displacement and protonation of His707 of the catalytic triad. We show that AAP is made susceptible to the association by its unusually sheltered active pockets and flexible catalytic triads, while the carbapenems possess sufficiently small substituents on their β-lactam rings to fit into the shallow substrate-specificity pocket of the enzyme.


  • Organizational Affiliation

    Laboratory of Structural Chemistry and Biology, Institute of Chemistry, Eötvös Loránd University Pázmány Péter sétány 1/A Budapest Hungary.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Acylamino-acid-releasing enzyme
A, B, C, D
732Sus scrofa domesticusMutation(s): 0 
EC: 3.4.19.1
UniProt
Find proteins for P19205 (Sus scrofa)
Explore P19205 
Go to UniProtKB:  P19205
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP19205
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Regional Development FundHungaryVEKOP-2.3.2-16-2017-00014
European Regional Development FundHungaryVEKOP-2.3.3-15-2017-00018
Ministry of Human CapacitiesHungary2018-1.2.1-NKP-2018-00005
National Research Development and Innovation Office (NKFIH)HungaryThematic Excellence Program 2019, Synth+
National Research Development and Innovation Office (NKFIH)HungaryK116305

Revision History  (Full details and data files)

  • Version 1.0: 2022-11-16
    Type: Initial release
  • Version 1.1: 2023-02-01
    Changes: Database references
  • Version 1.2: 2024-10-16
    Changes: Data collection, Structure summary