Studying protein structure and function using semisynthesis
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Updated: Jun 28, 2026

Application of I TASSER, trRosetta, UCSF Chimera, HADDOCK server, and HEX loria for De Novo and In Silico Design of Proteins
Published on: July 8, 2025
1Laboratory of Synthetic Protein Chemistry, The Rockefeller University, 1230 York Avenue, New York, NY 10021, USA. muirt@mail.rockefeller.edu
Abstract:
In this review, which is more or less a transcript of my du Vigneaud Award Lecture, I cover the development and application of the protein semisynthesis technique, Expressed Protein Ligation (EPL). EPL allows the assembly of modified proteins from recombinant and synthetic peptide building blocks. The approach has been widely used since its introduction in 1998 and has allowed a number of biochemical problems to be solved through the use of CEdesigner proteins. In this article, the utility of the approach is illustrated through work in my own lab and with an emphasis on the use of EPL to study the role of protein post-translational modifications.
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