TSH(thyrotropin)

Increased proteolysis of the thyroglobulin Increased activity of the iodide pump Increased iodination of tyrosine

Increased size and increased secretory activity of the thyroid cells

Increased number of thyroid cells

TLS Online TPP Program

#Id: 792

#Unit 3. Fundamental Processes

C is by far the most common base (41%) and G is the least common base (14%) in rut sites, vary in length.  As a general rule, the efficiency of a rut site increases with the length of the C-rich/G-poor region.

TLS Online TPP Program

#Id: 793

#Unit 3. Fundamental Processes

Rho is a member of the family of hexameric ATP-dependent helicases. Each subunit has an RNA-binding domain and an ATP hydrolysis domain.

TLS Online TPP Program

#Id: 794

#Unit 3. Fundamental Processes

Rho activity is impeded when ribosomes are translating an mRNA.

TLS Online TPP Program

#Id: 795

#Unit 3. Fundamental Processes

The action of rho factor may create link between transcription and translation when a rho-dependent terminator lies soon after a nonsense mutation.

TLS Online TPP Program

#Id: 796

#Unit 3. Fundamental Processes

Nonsense mutation in one gene of a transcription unit was found to prevent the expression of subsequent genes in the unit even though both genes had their own ribosome binding sites, an effect called polarity.

TLS Online TPP Program

#Id: 797

#Unit 3. Fundamental Processes

There are proteins so-called nut sites in the leader regions of both the 16S and 23S rRNA transcripts, forming antitermination complexes that inhibit the action of rho.