Semaphorin Receptors (Called Plexins) Promote Growth Cone Collapse Via the Small

question 3

Multiple Choice

Semaphorin receptors (called plexins) promote growth cone collapse via the small GTPase RhoA. How is this most likely to be accomplished?

• A) Activation of a RhoA GAP
• B) Activation of a RhoA GEF
• C) Inhibition of a RhoA GEF
• D) Phosphorylation of RhoA
• E) Ubiquitinylation of RhoA