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A Fluorescence-based Protocol for Preliminary Screening of Protein Synthesis Inhibitors from Natural Sources
Published on: January 27, 2026
Real-time assay for testing components of protein synthesis
Gabriel Rosenblum1, Chunlai Chen, Jaskiran Kaur
1The Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, USA.
Nucleic Acids Research
|March 17, 2012
Summary
We developed a rapid, real-time assay to measure protein synthesis. This method quantifies how changes to the protein synthesis machinery affect protein production, enabling high-throughput analysis.
Area of Science:
- Biochemistry
- Molecular Biology
- Biophysics
Background:
- Protein synthesis is fundamental to all life.
- Accurate measurement of protein synthesis is crucial for understanding cellular processes and developing therapeutics.
- Existing assays can be time-consuming and complex.
Purpose of the Study:
- To develop a flexible, real-time assay for monitoring protein synthesis.
- To quantitatively assess the impact of modifications to the protein synthesis machinery on protein production.
- To enable high-throughput screening of protein synthesis components.
Main Methods:
- Continuous monitoring of fluorescent protein (Emerald GFP) formation.
- Coupling fluorescence monitoring with numerical simulation of reaction kinetics.
- Utilizing cell-free protein synthesis systems.
Main Results:
- The assay allows for rapid and quantitative estimation of protein synthesis efficiency.
- It can determine the fraction of active ribosomes in cell-free systems.
- The relative activities of modified exogenous components (ribosomes, tRNAs) were assessed.
- Fluorescently labeled ribosomes and tRNAs retained significant activity.
Conclusions:
- This real-time assay offers a simpler and faster alternative to existing methods for studying protein synthesis.
- It is compatible with high-throughput formats, facilitating large-scale screening.
- The assay provides insights into the effects of component modifications on protein synthesis efficacy.
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