A Novel Single-cell Screening Platform Reveals Proteome Plasticity During Yeast Stress Responses

Overview

Journal J Cell Biol

Specialty Cell Biology

Date 2013 Mar 20

PMID 23509072

Citations 121

Authors

Michal Breker

Melissa Gymrek

Maya Schuldiner

Affiliations

Soon will be listed here.

Abstract

Uncovering the mechanisms underlying robust responses of cells to stress is crucial for our understanding of cellular physiology. Indeed, vast amounts of data have been collected on transcriptional responses in Saccharomyces cerevisiae. However, only a handful of pioneering studies describe the dynamics of proteins in response to external stimuli, despite the fact that regulation of protein levels and localization is an essential part of such responses. Here we characterized unprecedented proteome plasticity by systematically tracking the localization and abundance of 5,330 yeast proteins at single-cell resolution under three different stress conditions (DTT, H2O2, and nitrogen starvation) using the GFP-tagged yeast library. We uncovered a unique "fingerprint" of changes for each stress and elucidated a new response arsenal for adapting to radical environments. These include bet-hedging strategies, organelle rearrangement, and redistribution of protein localizations. All data are available for download through our online database, LOQATE (localization and quantitation atlas of yeast proteome).

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