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 transcript:

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

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!

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

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

Bacteriophage and Their Genomes

The Life Cycle of Bacteriophage Lambda

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: ≈ bp/sec Construct a physical model of these processes. Forceful ejection

A Genetic Switch

The Lambda Genome

A More Detailed Example of the Parrts List

The Lambda Switch: Lysogenic State

The Lambda Switch: Lytic State

DNA Geography of the Switch

Binding of Transcription Factors

Synthetic Genetic Switch Collins et al. - see course website

Stable Solutions

Phase Portrait for the Switch

Synthetic Genetic Switch Collins et al. - see course website

Coupling of Genes in Networks