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Model for bacteriophage T4 development in Escherichia coli
A Rabinovitch1, H Hadas, M Einav
1Department of Physics, Ben-Gurion University of the Negev, Be'er-Sheva, Israel 84105, USA.
Journal of Bacteriology
|February 27, 1999
Summary
This study models T4 bacteriophage replication within Escherichia coli, detailing phage development from infection to lysis. Mathematical relations predict phage numbers, considering factors like eclipse period and burst size, with good experimental agreement.
Area of Science:
- Microbiology
- Molecular Biology
- Biophysics
Background:
- Bacteriophage T4 is a model organism for studying viral replication.
- Understanding phage-host interactions is crucial for controlling bacterial infections.
Purpose of the Study:
- To develop mathematical models describing T4 bacteriophage replication dynamics in Escherichia coli.
- To quantify key parameters of the phage life cycle, including eclipse period, rise period, and burst size.
Main Methods:
- Mathematical modeling using five key parameters: eclipse period (nu), standard deviation of eclipse period (sigma), rise rate (alpha), lysis time (mu), and standard deviation of lysis time (beta).
- A least-squares program was employed to derive parameter values from experimental data.
- Inclusion of a destruction parameter (zeta) to account for chloroform's effect on phage survival.
Main Results:
- Mathematical relations were established for mature T4 bacteriophage numbers inside and after lysis of E. coli.
- Parameter values were derived for wild-type T4 in E. coli B/r under various conditions.
- The model demonstrated good overall agreement with experimental results.
Conclusions:
- The developed model accurately predicts T4 bacteriophage development.
- Derived parameters are sensitive to growth conditions, enabling predictions for different experimental manipulations.
- The model provides a quantitative framework for understanding phage-bacterial interactions.