Submit Manuscript  

Article Details


Investigation for New Inhibitors of UDP-N-Acetylglucosamine Enolpyruvyl Transferase (MurA) by Virtual Screening with Antibacterial Assessment

Author(s):

Ilham Boulhissa*, Abdelouahab Chikhi, Abderrahmane Bensegueni, Mohammad Ahmad Ghattas, El Hassen Mokrani, Sara Alrawashdeh and Dana Emad Eddin Obaid  

Abstract:


Background: View to its interesting role in the peptidoglycan biosynthesis pathway the enzyme UDP-N- acetylglucosamine enolpyruvyl transferase is an attractive target to develop new antibacterial agents, it catalyzes the first key step of this pathway and its inhibition leads to the bacterial cell death. Fosfomycin is known as the natural inhibitor of MurA.

Objective: Call new inhibitors of MurA by virtual screening of different chemical compounds libraries, and test the best scored “virtual hits” against three pathogenic bacteria: Escherichia coli, Bacillus subtilis, and Staphylococcus aureus.

Methods: A Virtual screening of the structural analogues of fosfomycin downloaded from PubChem database was performed on one side and of the French National Chemical Library as well as using ZINC database to identify new structures different from fosfomycin on the other, FlexX was the software used for this study. The antibacterial testing was divided into methods: disk diffusion and broth dilution.

Results: A set of virtual hits was found with better energy score than that of fosfomycin, seven between them were tested in vitro. Therefore, disk diffusion method explored four compounds exhibited antibacterial activity: CID-21680357 (fosfomycin analogue), AB-00005001, ZINC04658565, and ZINC901335. The testing was continued by broth dilution method for both compounds CID-21680357 and ZINC901335 to determine their minimum inhibitory concentrations, and ZINC901335 had the best value with 457µg/ml against Staphylococcus aureus.

Conclusion: Four compounds were found and proven in silico and in vitro to have antibacterial activity: CID-21680357, AB-00005001, ZINC04658565, and ZINC901335.

Keywords:

MurA, Antibacterial agents, Fosfomycin, Virtual screening, FlexX, In silico

Affiliation:

Laboratory of Applied Biochemistry, Department of Biochemistry and Cellular and Molecular Biology, Faculty of Natural and Life Sciences, University of Mentouri Brothers Constantine 1, Constantine, Laboratory of Applied Biochemistry, Department of Biochemistry and Cellular and Molecular Biology, Faculty of Natural and Life Sciences, University of Mentouri Brothers Constantine 1, Constantine, Laboratory of Applied Biochemistry, Department of Biochemistry and Cellular and Molecular Biology, Faculty of Natural and Life Sciences, University of Mentouri Brothers Constantine 1, Constantine, Laboratory of Applied Biochemistry, Department of Biochemistry and Cellular and Molecular Biology, Faculty of Natural and Life Sciences, University of Mentouri Brothers Constantine 1, Constantine, Laboratory of Applied Biochemistry, Department of Biochemistry and Cellular and Molecular Biology, Faculty of Natural and Life Sciences, University of Mentouri Brothers Constantine 1, Constantine, College of Pharmacy, Al Ain University of Science and Technology, Al Ain, College of Pharmacy, Al Ain University of Science and Technology, Al Ain



Full Text Inquiry