#Question id: 4530
#Unit 3. Fundamental Processes
A protein complex engaged in the pairing of homologous chromosomes during cell division has also been implicated in stabilizing certain enhancer–promoter loops.
#Question id: 4531
#Unit 3. Fundamental Processes
Specific elements called insulators control the actions of activators. When placed between an enhancer and a promoter,
#Question id: 4532
#Unit 3. Fundamental Processes
Locus control region, or LCR,
#Question id: 4533
#Unit 3. Fundamental Processes
When multiple activators work together, they often do so synergistically. That is, the effect of
#Question id: 4534
#Unit 3. Fundamental Processes
The yeast Saccharomyces cerevisiae divides by budding: instead of dividing to produce two identical daughter cells, the so-called mother cell buds to produce a daughter cell, The HO gene is expressed only in mother cells and only at a certain point in the cell cycle,
|
1. SBF |
I- Which is active only during the G1-S transition of the cell cycle. |
|
2. SWI5 |
II-Which acts only in the mother cell. |
|
III- Recruit nucleosome modifiers |
#Question id: 4535
#Unit 3. Fundamental Processes
The activators bind—and the enhanceosome forms—in a highly cooperative manner, ensuring that all three activators must be present. The following are three ways the regulators might be binding cooperatively:
I- Through direct protein–protein interactions between them
II- By changes in the DNA caused by binding of one protein helping binding of another;
III- By the fact that the activators all interact simultaneously with the coactivator.