Discussion
Scaffold proteins in signalling pathways serve to
Answer: D
Correct answer: hold successive components close together
A scaffold binds several members of a cascade at once, holding them in proximity so the signal passes efficiently from one to the next. It also prevents cross-talk, since components tied to one scaffold do not stray into a parallel pathway using the same kinases - which is how a cell runs several pathways through shared components without confusing them.
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