UAS drives expression of the EndoA product in which the central appendage (amino acids 59-88) are deleted and replaced with the AHLSSLLQ sequence derived from the central concavity of Hsap\ARFIP2, and tagged with Tag:HA at the C-terminus.
Scer\GAL4elav-C155/EndoA::Hsap\ARFIP2UAS.Tag:HA is a suppressor of lethal | second instar larval stage phenotype of EndoAΔ4
Scer\GAL4elav-C155/EndoA::Hsap\ARFIP2UAS.Tag:HA is a suppressor of abnormal neurophysiology | third instar larval stage phenotype of EndoAΔ4
Expression of endoA::Hsap\ARFIP2Scer\UAS.T:Ivir\HA using Scer\GAL4elav-C155 rescues endoAΔ4 larval lethality to adulthood, although the adult rescuants cannot fly and have reduced locomotor activity, and they have a median survival time of only 1.5 days.
Scer\GAL4elav-C155-driven expression of endoA::Hsap\ARFIP2Scer\UAS.T:Ivir\HA rescues the severe tetanus-induced depression in excitatory junctional potentials (EJPs), the slow post-tetanic recovery of EJP amplitude, and the low frequency of spontaneous miniature EJPs seen in endoAΔ4 mutants.