Properties of epithelial-mesenchymal interactions:

Regional specificity of induction

Genetic specificity of induction

TLS Online TPP Program

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#Unit 3. Fundamental Processes

The lac promoter along with the bulk of other E. coli promoters, is recognized by RNA polymerase bearing the σ70 subunit.

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#Unit 3. Fundamental Processes

E. coli encodes several other s subunits that can replace σ 70 under certain circumstances.

a.σ 32 

b.σ 54

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#Unit 3. Fundamental Processes

The subunits of RNA Polymerases

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#Unit 3. Fundamental Processes

Template and transcript within the RNA polymerase elongating complex

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#Unit 3. Fundamental Processes

Core enzyme without the s subunit could not transcribe viral DNA, yet had no problems with highly nicked calf thymus DNA

TLS Online TPP Program

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#Unit 3. Fundamental Processes

With s subunit, the holoenzyme worked equally well on both types of DNA