Membrane ion channels that play important roles in generation of the action potential:

T (transient) channels 

L (long-lasting) channels Voltage gated potassium ion channel

TLS Online TPP Program

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#Unit 3. Fundamental Processes

Activity of the replication origin is controlled is DNA methylation

TLS Online TPP Program

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#Unit 3. Fundamental Processes

The E. coli oriC contains 11 copies of the GATC sequence

TLS Online TPP Program

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#Unit 3. Fundamental Processes

GATC is a target for methylation at the N6 position of A by Dam Methylase enzyme which uses SAM as methyl group donor

TLS Online TPP Program

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#Unit 3. Fundamental Processes

Several of methylation sites overlap dnaA boxes

TLS Online TPP Program

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#Unit 3. Fundamental Processes

DnaA is an ATP-binding protein and its binding to DNA is affected depending on whether ATP

TLS Online TPP Program

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#Unit 3. Fundamental Processes

DnaA is the E. coli licensing factor that must be made anew for each round of replication.