Included within a genomic fragment containing the complete GluRIIA coding region and 1kb of upstream sequences.
The quantal size at the neuromuscular junction is larger in Df(2L)SP22 larvae rescued with GluRIIA+tg than in Df(2L)SP22 larvae rescued with GluRIIB+tg.
Rescues the lethality of Df(2L)SP22 or Df(2L)AD1.
Increase in quantal content of GluRIIA mutants is rescued by GluRIIA+tg.