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- W3033245616 abstract "Summary Monitoring translational regulation in response to environmental signals is crucial for understanding cellular proteostasis. However, only limited approaches are currently available for quantifying acute changes in protein synthesis induced by stimuli. Recently, a clickable puromycin analog, O -propargyl-puromycin (OPP), was developed and applied to label the C-termini of nascent polypeptide chains (NPCs). Following affinity purification via a click reaction, OPP allows for a proteomic analysis of NPCs. Despite its advantage, the affinity purification of NPCs using magnetic beads or resins inherently suffers from significant non-specific protein binding, which hinders accurate quantification of the nascent proteins. To address this issue, we employed dual pulse labeling of NPCs with both OPP and stable isotope labeled amino acids to distinguish bona fide NPCs from non-specific proteins, thereby enabling the accurate quantitative profiling of NPCs. We applied this method to dissecting the transcription-coupled translation responses and quantified ~3,000 nascent proteins. We found that the translation of a subset of ribosomal proteins (e.g., RPSA, RPLP0) as well as signaling proteins (e.g., BCAR3, EFNA1, DUSP1) was significantly repressed by transcription inhibition. Together, the present method provides an accurate and broadly applicable nascent proteome profiling for many biological applications at the level of translation." @default.
- W3033245616 created "2020-06-12" @default.
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- W3033245616 date "2020-06-07" @default.
- W3033245616 modified "2023-10-16" @default.
- W3033245616 title "Quantitative nascent proteome profiling by dual pulse labeling with O-propargyl-puromycin and stable isotope labeled amino acids" @default.
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- W3033245616 doi "https://doi.org/10.1101/2020.06.06.137521" @default.
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