You have identified an enzyme that appears to be involved in the addition of palmityl group (a fatty acid)to certain proteins.Knowing that palmitoylated proteins are usually targeted to the plasma membrane,in which organelles might this enzyme be expressed?
A)Golgi apparatus and ER
B)Golgi apparatus and nucleus
C)ER and ribosomes
D)ER and nucleus

Question

Quizplus · Accepted Answer

The addition of a palmitoyl group to proteins occurs in the Golgi apparatus, and the modified proteins are then transported to the plasma membrane. Therefore, the enzyme involved in this process is likely to be expressed in the Golgi apparatus. Additionally, the ER is responsible for the synthesis and modification of lipids, including fatty acids, which are then transported to the Golgi apparatus for processing. Therefore, it is also likely that this enzyme could be expressed in the ER.

You Have Identified an Enzyme That Appears to Be Involved