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Updated: Dec 20, 2025

Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092
Published on: October 2, 2017
Penicillin binding protein 2a: An overview and a medicinal chemistry perspective
Menna-Allah W Shalaby1, Eman M E Dokla1, Rabah A T Serya1
1Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ain Shams University, Abbassia, 11566, Cairo, Egypt.
Abstract:
Antimicrobial resistance is an imminent threat worldwide. Methicillin-resistant Staphylococcus aureus (MRSA) is one of the "superbug" family, manifesting resistance through the production of a penicillin binding protein, PBP2a, an enzyme that provides its transpeptidase activity to allow cell wall biosynthesis. PBP2a's low affinity to most β-lactams, confers resistance to MRSA against numerous members of this class of antibiotics. An Achilles' heel of MRSA, PBP2a represents a substantial target to design novel antibiotics to tackle MRSA threat via inhibition of the bacterial cell wall biosynthesis. In this review we bring into focus the PBP2a enzyme and examine the various aspects related to its role in conferring resistance to MRSA strains. Moreover, we discuss several antibiotics and antimicrobial agents designed to target PBP2a and their therapeutic potential to meet such a grave threat. In conclusion, we consider future perspectives for targeting MRSA infections.
Insights
Methicillin-resistant Staphylococcus aureus (MRSA) poses a global threat due to its resistance. Targeting the PBP2a enzyme offers a promising strategy to inhibit bacterial cell wall biosynthesis and combat MRSA infections.
Area of Science:
- Microbiology
- Infectious Diseases
- Drug Discovery
Background:
- Antimicrobial resistance is a significant global health challenge.
- Methicillin-resistant Staphylococcus aureus (MRSA) is a major pathogen responsible for difficult-to-treat infections.
- MRSA confers resistance primarily through the production of penicillin-binding protein 2a (PBP2a).
Purpose of the Study:
- To review the role of PBP2a in MRSA resistance.
- To examine existing and novel therapeutic strategies targeting PBP2a.
- To discuss future perspectives for combating MRSA infections.
Main Methods:
- Literature review of scientific publications on MRSA and PBP2a.
- Analysis of the biochemical mechanisms of PBP2a in conferring resistance.
- Evaluation of the therapeutic potential of PBP2a inhibitors.
Main Results:
- PBP2a's low affinity for beta-lactam antibiotics is a key mechanism of MRSA resistance.
- PBP2a is a validated target for developing new antimicrobial agents.
- Several classes of antibiotics and novel compounds targeting PBP2a have shown therapeutic promise.
Conclusions:
- Inhibition of PBP2a is a viable strategy to overcome MRSA resistance.
- Further research into PBP2a-targeting agents is crucial for developing effective treatments.
- Targeting PBP2a holds significant potential for future MRSA infection management.
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