Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Reagentless Cleavage of the Peptide Backbone Using Light-Generated Radicals

Published

Author(s)

Barbara J. Jones, Mathew J. Vergne, David M. Bunk, Laurie E. Locascio, M A. Hayes

Abstract

A key step for protein identification and characterization is cleavage into distinct fragments. All current cleavage methods require the addition of reagents, either proteolytic enzymes or chemical agents, and often a second reagent to discontinue cleavage. We have developed a selective cleavage process for peptides and proteins that employs light-generated radicals produced from titanium dioxide. These short-lived radicals can be produced in confined regions and time scales, making this technique highly tunable. By shining light on titanium dioxide, under a variety of conditions and morphologies, in the presence of peptides and proteins in solution, selective cleavage is consistently observed at proline residues.
Citation
Science

Keywords

cleavage, hydroxyl radical, peptide backbone, titanium dioxide

Citation

Jones, B. , Vergne, M. , Bunk, D. , Locascio, L. and Hayes, M. (2021), Reagentless Cleavage of the Peptide Backbone Using Light-Generated Radicals, Science (Accessed December 8, 2022)
Created October 12, 2021