Imprecise excision of the progenitor insertion, resulting in a 841bp deletion that removes the start codon and sequence encoding the first two transmembrane domains of Eaat1.
Homozygous, Eaat1SM1/Eaat1SM2 and Eaat1SM1/Df(2L)30A-C larvae all die by 48 hours post-hatching.
Homozygous larvae have a dramatically reduced rate of full-body peristaltic contractions compared to controls.