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Updated: Jun 29, 2026
12:31
Chemoselective Modification of Viral Surfaces via Bioorthogonal Click Chemistry
Published on: August 19, 2012
Oxo-ester mediated native chemical ligation: concept and applications.
1Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, New York 10065, USA.
Journal of the American Chemical Society
|October 16, 2008
Summary
A novel oxo-ester peptide ligation method enables direct cysteine ligations using activated para nitrophenyl esters. This efficient technique accommodates peptides with bulky C-terminal amino acids.
Area of Science:
- Biochemistry
- Organic Chemistry
- Peptide Chemistry
Background:
- Peptide synthesis often requires complex protecting group strategies.
- Direct ligation methods offer streamlined approaches to peptide assembly.
Purpose of the Study:
- To develop a direct oxo-ester peptide ligation method.
- To enable efficient ligation with cysteine residues.
- To accommodate peptides with sterically hindered C-termini.
Main Methods:
- Utilized an activated C-terminal para nitrophenyl ester for peptide ligation.
- Investigated the direct reaction between the activated ester and cysteine-containing peptides.
- Assessed reaction efficiency with various peptide substrates, including those with bulky C-terminal amino acids.
Main Results:
- Successfully developed a direct oxo-ester peptide ligation method.
- Achieved direct ligation with cysteine residues.
- Demonstrated high reaction efficiency even with peptide substrates containing bulky C-terminal amino acids.
Conclusions:
- The developed oxo-ester peptide ligation is an efficient and versatile method.
- This approach simplifies peptide synthesis, particularly for sterically demanding sequences.
- Offers a valuable tool for constructing complex peptides.
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