Class I presentation requires internal synthesis of virus protein, as shown by the requirement that the target cell be infected by live virus, and by the inhibition of class I presentation observed when protein synthesis was blocked by the inhibitor emetine

TLS Online TPP Program

#Id: 7504

#Unit 4. Cell Communication and Cell Signaling

Threonine residue T490 on RAG2 is phosphorylated during the S, G2, and M phases of the cell cycle, and this phosphorylation triggers the destruction of RAG2. 

TLS Online TPP Program

#Id: 3612

#Unit 3. Fundamental Processes

The initiation codon AUG is the most common signal for the beginning of a
polypeptide in all cells.

TLS Online TPP Program

#Id: 9814

#Unit 6. System Physiology – Plant

The PHYA gene is transcriptionally active in dark-grown seedlings, but its expression is strongly inhibited in the light in monocots.

TLS Online TPP Program

#Id: 1410

#Unit 4. Cell Communication and Cell Signaling

Smooth muscle cells and nonmuscle cells are regulated by: Norepinephrine, angiotensin, endothelin, histamine

TLS Online TPP Program

#Id: 7524

#Unit 6. System Physiology – Plant

Auxin-induced proton extrusion acidifies the cell wall and increases cell extension Auxin increase the rate of proton extrusion (wall acidification), and the kinetics of proton extrusion should closely match those of auxin-induced growth.