Two chloroplast proteins ferredoxin–thioredoxin reductase and thioredoxin regulate five pivotal enzymes within minutes of the

light–dark transition:

TLS Online TPP Program

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#Unit 3. Fundamental Processes

Each haploid bacterium typically has a single chromosome, so this type of replication control is called single copy.

TLS Online TPP Program

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#Unit 3. Fundamental Processes

The single circular chromosomes of Sulfolobus species have three origins and thus are composed of three replicons.

TLS Online TPP Program

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#Unit 3. Fundamental Processes

Each eukaryotic chromosome contains a large number of replicons spaced unevenly throughout the chromosomes.

TLS Online TPP Program

#Id: 723

#Unit 3. Fundamental Processes

The bacterial DnaA protein is the replication initiator; it binds sequence specifically to multiple sites (dnaA boxes) in oriC.

TLS Online TPP Program

#Id: 724

#Unit 3. Fundamental Processes

Activity of the replication origin is controlled is DNA methylation

TLS Online TPP Program

#Id: 725

#Unit 3. Fundamental Processes

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