ArticleCell chemical biology2022
Chemoselective restoration of para-azido-phenylalanine at multiple sites in proteins.
Article in Cell chemical biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Fluorophore placement and size impact E2 ubiquitination efficiency.The Biochemical journal · 2026Article
- Site-Specific Protein Bioconjugation Through Cellular Incorporation of Noncanonical Amino Acids.Angewandte Chemie (International ed. in English) · 2026Review
- Dynamic view of an allosteric intermediate in a positively cooperative dimer.bioRxiv : the preprint server for biology · 2026Article
- Combined biosynthesis and site-specific incorporation of phenylalanine derivatives from aryl aldehydes or carboxylic acids.Nature communications · 2026Article
- β-Amino Acids Reduce Ternary Complex Stability and Alter the Translation Elongation Mechanism.ACS central science · 2024Article
- β-amino acids reduce ternary complex stability and alter the translation elongation mechanism.bioRxiv : the preprint server for biology · 2024Article
- Tuning protein half-life in mouse using sequence-defined biopolymers functionalized with lipids.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
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Authors and funding
7 authors.
Funding
Abstract
The site-specific incorporation of nonstandard amino acids (nsAAs) during translation has expanded the chemistry and function of proteins. The nsAA para-azido-phenylalanine (pAzF) encodes a biorthogonal chemical moiety that facilitates "click" reactions to attach diverse chemical groups for protein functionalization. However, the azide moiety is unstable in physiological conditions and is reduced to para-amino-phenylalanine (pAF). Azide reduction decreases the yield of pAzF residues in proteins to 50%-60% per azide and limits protein functionalization by click reactions. Here, we describe the use of a pH-tunable diazotransfer reaction that converts pAF to pAzF at >95% efficiency in proteins. The method selectively restores pAzF at multiple sites per protein without introducing off-target modifications. This work addresses a key limitation in the production of pAzF-containing proteins by restoring azides for multi-site functionalization with diverse chemical moieties, setting the stage for the production of genetically encoded biomaterials with broad applications in biotherapeutics, materials science, and biotechnology.
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