The single replicator 245 bp required for E. coli chromosomal replication is called oriC. Two repeated motifs are critical for oriC function.

The 9-mer motif is the binding site for the E. coli initiator, DnaA, and is repeated five times at oriC.

The 13-mer motif, repeated three times, is the initial site of ssDNA formation during initiation.

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#Unit 4. Cell Communication and Cell Signaling

In the absence of ATP, the myosin head is firmly attached to the actin filament. 

 

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#Unit 6. System Physiology – Plant

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#Unit 3. Fundamental Processes

oriC must be fully methylated.

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#Unit 5. Developmental Biology

Foregut endoderm and cardiac mesoderm cause the synthesis of the Otx2 transcription factor in the head ectoderm during the late gastrula stage

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#Unit 4. Cell Communication and Cell Signaling

Recombination between the D and a JH gene segment occur during pre pro-B cell to the early pro-B-cell stage.