ArticleMethods in molecular biology (Clifton, N.J.)2023
Chemical Labeling of Protein 4'-Phosphopantetheinylation in Surfactin-Producing Nonribosomal Peptide Synthetases.
Article in Methods in molecular biology (Clifton, N.J.), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
4'-Phosphopantetheinylation is an essential posttranslational modification of the primary and secondary metabolic pathways in prokaryotes and eukaryotes. Several peptide-based natural products are biosynthesized by large, multifunctional enzymes known as nonribosomal peptide synthetases (NRPSs), responsible for producing virulence factors and many pharmaceuticals. The thiolation (T) domain serves as a covalent tether for substrates and intermediates in nonribosomal peptide biosynthesis and must be posttranslationally modified with a 4'-phosphopantetheinyl group. To detect 4'-phosphopantetheinylation of NRPS in bacterial proteomes, we developed a 5'-(vinylsulfonylaminodeoxy)adenosine scaffold with a clickable functionality, enabling effective chemical labeling of 4'-phosphopantethylated NRPSs. In this chapter, we describe the design and synthesis of an activity-based protein profiling probe and summarize our work toward developing a series of protocols for the labeling and visualization of 4'-phosphopantetheinylation of endogenous NRPSs in complex proteomes.
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