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Dual Fluorescence Cytometry Assay to Assess Cellular Protein Levels.


ABSTRACT: Expression levels of cellular proteins can be affected by various perturbations, such as genetic knockout of interactors, drug treatments or cell stress. To specifically measure the effects on protein levels post-synthesis under different experimental conditions, it is important to compensate for transcriptional and other upstream changes. Here, we provide a protocol for a dual-fluorescence flowcytometry-based assay to determine protein levels. The protein of interest is genetically linked to enhanced GFP (eGFP) followed by a viral 2A self-cleaving peptide sequence and mCherry. As a result, translation of the reporter construct leads to two fluorescent protein products from the same mRNA template, which enables unambiguous protein expression analysis with normalization across samples.

SUBMITTER: Ngo AM 

PROVIDER: S-EPMC7842662 | biostudies-literature |

REPOSITORIES: biostudies-literature

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