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Chapter 23 : Solving Genetic Puzzles

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Solving Genetic Puzzles, Page 1 of 2

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Abstract:

The author found the logic of Koch's approach for proving that a particular organism caused a particular disease particularly appealing, as well as the description of figuring out how to make single colonies on a potato slice. The author's postdoctoral project was on the site-specific excision of bacteriophage lambda. Mark Shulman, who had preceded her in the lab, had developed a lambda derivative that allowed an intramolecular excision reaction. The aim was to reconstitute the reaction in vitro; Howard Nash was using similar approaches to look at the integration reaction. Some progress was made, and the researchers found out something about the in vivo reaction as well. The researchers wanted to understand what sort of cellular substrates Lon degraded and how proteolysis is used by the cell to regulate gene expression. The ultimate test was the demonstration that suspected targets were rapidly degraded but were stabilized in mutants.

Citation: Gottesman S. 2000. Solving Genetic Puzzles, p 179-185. In Atlas R (ed), Many Faces, Many Microbes. ASM Press, Washington, DC. doi: 10.1128/9781555818128.ch23

Key Concept Ranking

Microbial Genetics
0.8671945
Bacterial Genetics
0.8389847
Missense Mutation
0.7476866
Gene Expression
0.6849532
ATP-Dependent Protease
0.57812965
Serratia marcescens
0.57269615
0.8671945
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Citation: Gottesman S. 2000. Solving Genetic Puzzles, p 179-185. In Atlas R (ed), Many Faces, Many Microbes. ASM Press, Washington, DC. doi: 10.1128/9781555818128.ch23
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References

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1. Gottesman, S.,, S. Wickner,, and M. R. Maurizi. 1997. Protein quality control: triage by chaperones and proteases. Genes Dev. 11:815823.
2. Sledjeski, D. D.,, A. Gupta,, and S. Gottesman. 1996. The small RNA, DsrA, is essential for the low temperature expression of RpoS during exponential growth in Escherichia coli. EMBO J. 15:39934000.
3. Wickner, S.,, S. Gottesman,, D. Skowyra,, J. Hoskins,, K. McKenney,, and M. Maurizi. 1994. A molecular chaperone, ClpA, functions like DnaK and DnaJ. Proc. Natl. Acad. Sci. USA 91:1221812222.
4. Maurizi, M. R.,, W. P. Clark,, S. -H Kim,, and S. Gottesman. 1990. CIpP represents a unique family of serine proteases. J. Biol. Chem. 265:1254612552.
5. Gottesman, S.,, C. Squires,, E. Pichersky,, M. Carrington,, M. Hobbs,, J. S. Mattick,, B. Dalrymple,, H. Kuramitsu,, T. Shiroza,, T. Foster,, W. P. Clark,, B. Ross,, C. Squires,, and M. R. Maurizi. 1990. Conservation of the regulatory subunit for the Clp ATP-dependent protease in prokaryotes and eukaryotes. Proc. Natl. Acad. Sci. USA 87:35133517.
6. Torres-Cabassa, A. S.,, and S. Gottesman. 1987. Capsule synthesis in Escherichia coli K-12 is regulated by proteolysis. J. Bacteriol. 169:981989.
7. Mizusawa, S.,, and S. Gottesman. 1983. Protein degradation in Escherichia coli: The lon gene controls the stability of SulA protein. Proc. Natl. Acad. Sci. USA 80:358362.

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