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[In vivo and in vitro studies of phage T4 lysozyme mRNA translation]
Abstract:
Translation of phage T4 lysozyme mRNA is studied in vivo and in vitro. Polyribosomes, carrying growing lysozyme polypeptides, are found to be homogenous enough and to contain 6 ribosomes. Complete molecules of phage lysozyme, which possess an enzymatic activity and are similar to the native enzyme in its electrophoretic mobility in polyacrylamide gel, have been synthetized in vitro on RNA isolated from phage-infected cells. The efficiency of RNA translation in cell-free system is discussed on the model of synthesis of functionally active individual protein.
Insights
Researchers studied phage T4 lysozyme messenger RNA (mRNA) translation. In vitro synthesis produced active lysozyme, demonstrating the efficiency of cell-free protein synthesis systems.
Area of Science:
- Molecular Biology
- Virology
- Protein Synthesis
Background:
- Bacteriophage T4 lysozyme is a well-characterized viral protein.
- Understanding mRNA translation is crucial for gene expression studies.
Purpose of the Study:
- To investigate the in vivo and in vitro translation of phage T4 lysozyme mRNA.
- To assess the efficiency of synthesizing functionally active proteins in cell-free systems.
Main Methods:
- Isolation of RNA from phage-infected cells.
- In vitro translation assays using a cell-free system.
- Analysis of synthesized lysozyme for enzymatic activity and electrophoretic mobility.
Main Results:
- Polyribosomes involved in lysozyme synthesis were found to be homogeneous, typically containing 6 ribosomes.
- Complete, enzymatically active phage T4 lysozyme molecules were synthesized in vitro.
- The in vitro synthesized enzyme exhibited electrophoretic mobility similar to the native enzyme.
Conclusions:
- Phage T4 lysozyme mRNA can be efficiently translated in vitro.
- Cell-free systems are effective for producing functionally active viral proteins.
- This study provides a model for evaluating RNA translation efficiency.