Imprecise excision of P{lacW}SpplSH116 resulting in elimination of the branch points for the introns between non-coding exons 2-3 and between non-coding exon 2 and coding exon 1 (proximal to the insertion), and removal of the translation start site, the first transmembrane domain and part of the loop between transmembrane domains 1 and 2 (distal to the insertion).
Mutants display no obvious morphological abnormalities. Hemizygous SppL57D/Df(3R)SpplBW1 flies have a similar life span to controls.
Df(3R)SpplBW1/SppL57D, S2P1 has viable phenotype
Df(3R)SpplBW1/SppL57D, S2P1 has fertile phenotype
Double mutants of S2P1 and SppL57D/Df(3R)SpplBW1 are viable, of normal size and shape, and fertile.