The specificity of signaling pathways does NOT include:
A) flippase-catalyzed movement of phospholipids from the inner to the outer leaflet.
B) migration of signal proteins into membrane rafts.
C) phosphorylation of target proteins at Ser, Thr, or Tyr residues.
D) the ability to be switched off instantly by hydrolysis of a single phosphate-ester bond.
E) the assembly of large multiprotein complexes.

Question

Quizplus · Accepted Answer

Flippase-catalyzed movement of phospholipids from the inner to the outer leaflet is not directly related to the specificity of signaling pathways.

Answer: D 
 The ability to be switched off instantly by hydrolysis of a single phosphate-ester bond is a characteristic of many signaling pathways but it is not part of their specificity.

Answer: B, C, E 
 Migration of signal proteins into membrane rafts, phosphorylation of target proteins at Ser, Thr, or Tyr residues, and the assembly of large multiprotein complexes are all key aspects of the specificity of signaling pathways.

The Specificity of Signaling Pathways Does NOT Include