Multiple Choice
The sequence Lys-Asp-Glu-Leu (KDEL) serves as an ER retention signal for proteins by binding to KDEL receptors that
A) hold the proteins in the rough ER.
B) hold the proteins in the smooth ER.
C) hold the proteins in both the smooth ER and rough ER and prevent their transport to the Golgi apparatus.
D) transport the proteins from the Golgi apparatus back to the ER.
Correct Answer:
Verified
Correct Answer:
Verified
Q91: Disulfide bonds within or between proteins form
Q92: In plant cells, vesicles transport proteins from
Q93: Describe the role of each of the
Q94: The initial site of N-linked glycosylation is
Q95: Imagine a transmembrane molecule that lies in
Q97: Defects in lysosomal enzyme levels can be
Q98: Vesicle formation is driven by the binding
Q99: Polypeptides inside the ER are usually smaller
Q100: In the "pulse-chase" experiment, Palade and
Q101: In polarized epithelial cells, membrane proteins containing