Considering the Same Unidentified Proteins Discussed in the Question 32

question 3

Multiple Choice

Considering the same unidentified proteins discussed in the question 32 above (UPS-1 through UPS-3) what can you conclude from the following observations and the knowledge you gained in this chapter?
OBSERVATIONS:
1) UPS-1 is capable of autophosphorylation.
2) UPS-2 becomes phosphorylated only when UPS-1 is phosphorylated.
3) UPS-2,when phosphorylated interacts with UPS-3 and activates the Ras protein.
4) Recombinant UPS-2 protein that has a mutation resulting in the replacement of tyrosine for serine in the binding region loses all function.
5) The proteins Jun and Fos are expressed at high levels in the presence of UPS-1,2,3.

• A)The UPS signaling system functions as a heterotrimeric G protein signaling cascade.
• B)Sugarish appears to solicit a similar insulin response to that expected from glucose.
• C)Sugarish must be sensitive to the phosphoinositide pathway.
• D)Calmodulin (CaM)would likely alter the activity of the UPS proteins.
• E)None of the above are possible conclusions.

---

Definitions:

Net Present Value

The contrast in the present value of money received and the present value of money spent over a designated duration, applied in capital budgeting to appraise the profitability of a potential investment.

Cash Inflows

Refers to the money received by a business from its various activities, including sales, investments, financing, etc.

Initial Cost

The upfront expenditure required to purchase an asset or to start a project, including setup or installation fees.

Initial Outlay

The initial investment amount required to start a project or purchase an asset.