Amino acid replacement: T40N.
UASt regulatory sequences drive expression of a predicted dominant negative form of RabX4 that is tagged at the N-terminal end with YFP.
Expression of RabX4T40N.Scer\UAS.T:Avic\GFP-YFP under the control of either Scer\GAL4eg-Mz360, Scer\GAL4eve.RN2 or Scer\GAL4elav-C155 does not result in any defects in axon outgrowth in the embryo.