UASt regulatory sequences drive expression of an inverted repeat.
Expressing HEATR2KK102625 under the control of Scer\GAL4VP16.bam results in immotile sperm.
Adults expressing HEATR2KK102625 under the control of Scer\GAL4sca.PU show defective climbing activity, as compared to controls.
Whereas control larvae contract abruptly when exposed to a 10kHz tone, Scer\GAL4sca-DB HEATR2KK102625 (+ UAS-Dcr2) larvae fail to respond.
The specification and gross differentiation of Ch neurons in Scer\GAL4sca-DB HEATR2KK102625 (+ UAS-Dcr2) flies is unaffected and gross formation of Ch neuron cilia is not disrupted.
The normal 9+0 arrangement of microtubule doublets in the proximal (motile) zone of the Ch neuron cilium in Scer\GAL4sca-DB HEATR2KK102625 (+ UAS-Dcr2) adult flies is present but the axoneme lacks both outer and inner dynein arms. Structures consistent with remnant dynein arms are only ever detected on a small minority of doublets.
Scer\GAL4bam.T:Hsim\VP16 HEATR2KK102625 (+ UAS-Dcr2) testes appear to develop normally and mature sperm are present, but no motile sperm are observed in the seminal vesicle. While wild type cysts contain 64 spermatids, Scer\GAL4bam.T:Hsim\VP16 HEATR2KK102625 (+ UAS-Dcr2) cysts contain an average of 60.7 identifiable spermatids. These have a normal axonemal ‘‘9+2’’ arrangement, but dynein arms are generally not visible.