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The Development of the Operon Concept: What Cells Eat and When They Die (Berman et al.) The big idea: there are genes that control other genes! Bacterial.

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Presentation on theme: "The Development of the Operon Concept: What Cells Eat and When They Die (Berman et al.) The big idea: there are genes that control other genes! Bacterial."— Presentation transcript:

1 The Development of the Operon Concept: What Cells Eat and When They Die (Berman et al.) The big idea: there are genes that control other genes! Bacterial growth curves

2 Exploring Regulatory Diversity Key point: We can work out the regulation factor for many other scenarios including other looping scenarios. Synergistic Activation Better census needed!

3 How Should We Think About Regulation Quantitatively? Wong, Gladney, and Keasling ‘03 Rate Equation Perspective “Thermodynamic Models” – Equilibrium Notions

4 The Lambda Switch: The Other Hydrogen Atom of Gene Regulation Roger Hendrix

5 Bacteriophage and Their Genomes http://www.biochem.wisc.edu/inman/empics/0020b.jpg

6 The Life Cycle of Bacteriophage Lambda

7 Physical Consequences of the Tight Squeeze in the Life Cycle of a Bacteriophage Rate of packing: 100bp/sec “Some assembly required” Self-assembly Rate of ejection: ≈ 100 - 1000bp/sec Construct a physical model of these processes. Forceful ejection

8 A Genetic Switch

9 The Lambda Genome

10 A More Detailed Example of the Parrts List

11 The Lambda Switch: Lysogenic State

12 The Lambda Switch: Lytic State

13 DNA Geography of the Switch

14 Binding of Transcription Factors

15 Synthetic Genetic Switch Collins et al. - see course website

16 Stable Solutions

17 Phase Portrait for the Switch

18 Synthetic Genetic Switch Collins et al. - see course website

19 Coupling of Genes in Networks


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