8HXE

Crystal structure of B3 L1 MBL in complex with 2-amino-5-(4-propylbenzyl)thiazole-4-carboxylic acid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.38 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.222 

Starting Model: in silico
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Literature

Discovery of 2-Aminothiazole-4-carboxylic Acids as Broad-Spectrum Metallo-beta-lactamase Inhibitors by Mimicking Carbapenem Hydrolysate Binding.

Yan, Y.H.Zhang, T.T.Li, R.Wang, S.Y.Wei, L.L.Wang, X.Y.Zhu, K.R.Li, S.R.Liang, G.Q.Yang, Z.B.Yang, L.L.Qin, S.Li, G.B.

(2023) J Med Chem 66: 13746-13767

  • DOI: https://doi.org/10.1021/acs.jmedchem.3c01189
  • Primary Citation of Related Structures:  
    8HX5, 8HXE, 8HXI, 8HXN, 8HXO, 8HXP, 8HXU, 8HXV, 8HXW, 8HY1, 8HY2, 8HY6, 8HYD, 8JAO

  • PubMed Abstract: 

    Metallo-β-lactamases (MBLs) are zinc-dependent enzymes capable of hydrolyzing all bicyclic β-lactam antibiotics, posing a great threat to public health. However, there are currently no clinically approved MBL inhibitors. Despite variations in their active sites, MBLs share a common catalytic mechanism with carbapenems, forming similar reaction species and hydrolysates. We here report the development of 2-aminothiazole-4-carboxylic acids (AtCs) as broad-spectrum MBL inhibitors by mimicking the anchor pharmacophore features of carbapenem hydrolysate binding. Several AtCs manifested potent activity against B1, B2, and B3 MBLs. Crystallographic analyses revealed a common binding mode of AtCs with B1, B2, and B3 MBLs, resembling binding observed in the MBL-carbapenem product complexes. AtCs restored Meropenem activity against MBL-producing isolates. In the murine sepsis model, AtCs exhibited favorable synergistic efficacy with Meropenem, along with acceptable pharmacokinetics and safety profiles. This work offers promising lead compounds and a structural basis for the development of potential drug candidates to combat MBL-mediated antimicrobial resistance.


  • Organizational Affiliation

    Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Metallo-beta-lactamase L1 type 3
A, B
266Stenotrophomonas maltophiliaMutation(s): 0 
EC: 3.5.2.6
UniProt
Find proteins for P52700 (Stenotrophomonas maltophilia)
Explore P52700 
Go to UniProtKB:  P52700
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP52700
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
51I (Subject of Investigation/LOI)
Query on 51I

Download Ideal Coordinates CCD File 
E [auth A],
I [auth B]
2-azanyl-5-[(4-propylphenyl)methyl]-1,3-thiazole-4-carboxylic acid
C14 H16 N2 O2 S
SYFGCASYKCRAIZ-UHFFFAOYSA-N
ZN
Query on ZN

Download Ideal Coordinates CCD File 
C [auth A],
D [auth A],
G [auth B],
H [auth B]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
SCN
Query on SCN

Download Ideal Coordinates CCD File 
F [auth A],
J [auth B]
THIOCYANATE ION
C N S
ZMZDMBWJUHKJPS-UHFFFAOYSA-M
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.38 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.222 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 75.525α = 90
b = 75.525β = 90
c = 181.039γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
PHASERphasing
XDSdata scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China81874291
National Natural Science Foundation of China (NSFC)China82122065
National Natural Science Foundation of China (NSFC)China82073698

Revision History  (Full details and data files)

  • Version 1.0: 2023-11-01
    Type: Initial release