RNA polymerase III transcribes a set of short genes. The classical class III genes (types I and II) have promoters that lie wholly within the genes.

 

TLS Online TPP Program

#Id: 9608

#Unit 4. Cell Communication and Cell Signaling

For most, but not all, RTKs, the weakly active kinase in each subunit is phosphorylate a key tyrosine in the activation loop of the other subunit (trans-phosphorylation)

TLS Online TPP Program

#Id: 5545

#Unit 7. System Physiology – Animal

In the thick segment of the ascending loop of Henle, paracellular reabsorption of cations, such as Mg++, Ca++, Na+, and K+ occur

TLS Online TPP Program

#Id: 1855

#Unit 3. Fundamental Processes

Start point, is the first base of mRNA to be A

• Initiator (Inr) is Py2CAPy5, where Py stands for any pyrimidine. The Inr is contained between positions -3 and +5.

• TATA box, usually located, 25 bp upstream in its location at -25

• The exception is in yeast, where the TATA box is more typically found at -90.

TLS Online TPP Program

#Id: 6113

#Unit 3. Fundamental Processes

In Escherichia coli, MutS scans the DNA, recognizing mismatches from the distortion they cause in the DNA backbone. 

MutS has an ATPase activity that is required for mismatch repair and recruits MutL, a second protein component of the repair system. MutL, in turn, activates MutH, an enzyme that causes an incision or nick on one strand near the site of the mismatch. Nicking is followed by the action of a specific helicase (UvrD) helicase unwinds the DNA, starting from the incision and moving in the direction of the site of the mismatch, and the filled in by DNA polymerase III

TLS Online TPP Program

#Id: 9295

#Unit 6. System Physiology – Plant

The nitrate reductase dimer- Three binding domains