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Antimicrobial Peptides Produced by Selective Pressure Incorporation of Non-canonical Amino Acids
Published on: May 4, 2018
Advances in Bacterial Methionine Aminopeptidase Inhibition
Travis R Helgren, Phumvadee Wangtrakuldee, Bart L Staker
1Northern Illinois University, Department of Chemistry and Biochemistry, DeKalb, IL 60115 USA. thagen@niu.edu.
Abstract:
Methionine aminopeptidases (MetAPs) are metalloenzymes that cleave the N-terminal methionine from newly synthesized peptides and proteins. These MetAP enzymes are present in bacteria, and knockout experiments have shown that MetAP activity is essential for cell life, suggesting that MetAPs are good antibacterial drug targets. MetAP enzymes are also present in the human host and selectivity is essential. There have been significant structural biology efforts and over 65 protein crystal structures of bacterial MetAPs are deposited into the PDB. This review highlights the available crystallographic data for bacterial MetAPs. Structural comparison of bacterial MetAPs with human MetAPs highlights differences that can lead to selectivity. In addition, this review includes the chemical diversity of molecules that bind and inhibit the bacterial MetAP enzymes. Analysis of the structural biology and chemical space of known bacterial MetAP inhibitors leads to a greater understanding of this antibacterial target and the likely development of potential antibacterial agents.
Insights
Methionine aminopeptidases (MetAPs) are essential bacterial enzymes and potential drug targets. Structural analysis reveals differences between bacterial and human MetAPs, guiding the development of selective antibacterial agents.
Area of Science:
- Biochemistry
- Structural Biology
- Medicinal Chemistry
Background:
- Methionine aminopeptidases (MetAPs) are essential metalloenzymes in bacteria, crucial for protein synthesis.
- MetAP activity is vital for bacterial survival, identifying them as promising antibacterial drug targets.
- Human MetAPs share structural similarities, necessitating selective inhibition strategies.
Purpose of the Study:
- To review crystallographic data of bacterial MetAPs.
- To compare bacterial and human MetAP structures for selectivity insights.
- To analyze the chemical diversity of bacterial MetAP inhibitors.
Main Methods:
- Crystallographic data analysis of bacterial MetAPs.
- Comparative structural analysis between bacterial and human MetAPs.
- Review of chemical inhibitors targeting bacterial MetAPs.
Main Results:
- Over 65 bacterial MetAP crystal structures are available in the PDB.
- Structural differences between bacterial and human MetAPs identified.
- Diverse chemical scaffolds inhibit bacterial MetAP enzymes.
Conclusions:
- Bacterial MetAPs represent a viable target for novel antibacterial drug development.
- Structural comparisons facilitate the design of selective inhibitors.
- Understanding inhibitor chemical space aids in developing effective antibacterial agents.
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