Changes in osmotic potential of guard cells required for stomatal opening in the morning are mediated by potassium and its counterions, whereas the afternoon changes are mediated by sucrose.

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

TLS Online TPP Program

#Id: 726

#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

#Id: 727

#Unit 3. Fundamental Processes

Several of methylation sites overlap dnaA boxes

TLS Online TPP Program

#Id: 728

#Unit 3. Fundamental Processes

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