Membrane proteins can be anchored to the cytosolic face of the plasma membrane by
A) sugar groups of glycolipids.
B) prenyl groups.
C) sugar groups of glycoproteins.
D) None of the above

Question

Quizplus · Accepted Answer

Membrane proteins can be anchored to the cytosolic face of the plasma membrane by prenyl groups, which are hydrophobic lipid groups that attach to the amino acid cysteine on the protein's cytosolic domain. Glycolipids and glycoproteins are anchored to the extracellular side of the membrane by sugar groups, not the cytosolic side. Therefore, options A and C are not correct.

Membrane Proteins Can Be Anchored to the Cytosolic Face of the Plasma