What Is the Correct Sequence of Protein Processing in Cells?

[shawonna23]

Homework Statement

Consider the following events:

1) The protein has sugar added to become a glycoprotein.

2) The protein is in the plasma membrane with the sugar modification facing outside the cell.

3) A membrane protein is synthesized in the rough endoplasmic reticulum.

4) The glycoprotein is present in the membrane of a vesicle.

5) The sugars on the glycoprotein are modified.

6) The unmodified protein is present in the membrane of a vesicle.

What is the correct order of the events?

Homework Equations

none

The Attempt at a Solution

3) A membrane protein is synthesized in the rough endoplasmic reticulum.
6) The unmodified protein is present in the membrane of a vesicle.
1) The protein has sugar added to become a glycoprotein.
4) The glycoprotein is present in the membrane of a vesicle.
5) The sugars on the glycoprotein are modified.
2) The protein is in the plasma membrane with the sugar modification facing outside the cell.

 

[nobahar]

I agree. But then again it doesn't appear to offer much choice anyway.