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A Facile Protocol to Generate Site-Specifically Acetylated Proteins in Escherichia Coli
Published on: December 9, 2017
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Evolution of Pyrrolysyl-tRNA Synthetase: From Methanogenesis to Genetic Code Expansion
Nikolaj G Koch1,2, Nediljko Budisa3,4
1Department of Chemistry, Institute of Physical Chemistry, University of Basel, 4058 Basel, Switzerland.
Chemical Reviews
|July 2, 2024
Summary
Genetic code expansion utilizes the pyrrolysyl-tRNA synthetase (PylRS) system to incorporate non-canonical amino acids (ncAAs). This review details engineering PylRS for enhanced activity and diverse applications in therapeutics and antimicrobials.
Area of Science:
- Biochemistry
- Molecular Biology
- Synthetic Biology
Background:
- The pyrrolysine (pyl) genetic system, discovered in archaea, involves pyrrolysyl-tRNA synthetase (PylRS) and its cognate tRNA.
- This system was initially linked to methanogenic metabolic pathways.
- It has since become foundational for genetic code expansion.
Purpose of the Study:
- To review the engineering of PylRS for novel substrate recognition and improved in vivo activity.
- To compile a comprehensive list of non-canonical amino acids (ncAAs) usable with the PylRS system.
- To summarize PylRS applications in developing therapeutics, vaccines, and antimicrobials.
Main Methods:
- Review of literature on PylRS engineering strategies.
- Compilation and categorization of known ncAAs incorporated via PylRS.
- Summary of case studies showcasing PylRS-mediated applications.
Main Results:
- PylRS can be successfully engineered to recognize a wide array of ncAAs.
- Engineered PylRS systems demonstrate enhanced in vivo activity.
- The PylRS system has been applied to create novel antibody-drug conjugates, vaccine platforms, and potential antimicrobials.
Conclusions:
- The PylRS system is a versatile tool for genetic code expansion.
- Continued engineering of PylRS holds significant promise for therapeutic innovation.
- PylRS-mediated ncAA incorporation is advancing drug discovery and development.
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