Solid-phase peptide synthesis and protein semi-synthesis are powerful methods for site-specific modification of peptides and proteins. We describe protocols using these techniques for the syntheses of peptides and proteins bearing glutamate arginylation (EArg) at specific sites. These methods overcome challenges posed by enzymatic arginylation methods and allow for a comprehensive study of the effects of EArg on protein folding and interactions. Potential applications include biophysical analyses, cell-based microscopic studies, and profiling of EArg levels and interactomes in human tissue samples.
Keywords: Glutamate arginylation; Native chemical ligation; Posttranslational modification; Protein semi-synthesis; Solid-phase peptide synthesis.
© 2023. The Author(s), under exclusive license to Springer Science+Business Media, LLC, part of Springer Nature.