anterior fascicle & synapse, with Scer\GAL4elav-C155
Embryos expressing chbEP3403 under the control of Scer\GAL4elav.PLu show a low but significant number of axons ectopically crossing the midline.
Mutant larvae expressing chbEP3403 under the control of Scer\GAL4elav-C155 have reduced or abnormal synapses. Mutant larvae expressing chbEP3403 under the control of Scer\GAL4elav-C155 have ISN neuron pathfinding defects.
Mutant larval brains have a mitotic index significantly higher than wild-type, (1.94 compared to 1.14), the majority of cells are arrested in metaphase or prometaphase, polyploid cells, cells with abnormal anaphases and circular mitotic figures are also seen.
Scer\GAL4elav.PLu, chbEP3403 has abnormal neuroanatomy phenotype, enhanceable by AblUAS.cFa
chbEP3403 is an enhancer of abnormal neuroanatomy phenotype of AblUAS.cFa, Scer\GAL4elav.PLu
chbEP3403, Scer\GAL4GMR.PF is an enhancer of visible phenotype of Hsap\MAPTV337M.UAS, Scer\GAL4GMR.PF
Scer\GAL4hs.2sev/chbEP3403 is an enhancer of visible phenotype of ksr::torΔNksr.hs.sev
chbEP3403, Scer\GAL4GMR.PF is a non-enhancer of visible phenotype of Hsap\ATXN182.UAS, Scer\GAL4GMR.PF
Scer\GAL4hs.2sev/chbEP3403 is a suppressor of visible phenotype of Ras85DV12.sev
chbEP3403, Scer\GAL4GMR.PF is a non-suppressor of visible phenotype of Hsap\ATXN182.UAS, Scer\GAL4GMR.PF
Scer\GAL4elav.PLu, chbEP3403 has larval neuron phenotype, enhanceable by AblUAS.cFa
chbEP3403 is an enhancer of larval intersegmental nerve phenotype of AblUAS.cFa, Scer\GAL4elav.PLu
chbEP3403 is an enhancer of larval neuron phenotype of AblUAS.cFa, Scer\GAL4elav.PLu
chbEP3403, Scer\GAL4GMR.PF is an enhancer of eye phenotype of Hsap\MAPTV337M.UAS, Scer\GAL4GMR.PF
chbEP3403, Scer\GAL4GMR.PF is an enhancer of ommatidium phenotype of Hsap\MAPTV337M.UAS, Scer\GAL4GMR.PF
Scer\GAL4hs.2sev/chbEP3403 is an enhancer of eye phenotype of ksr::torΔNksr.hs.sev
chbEP3403, Scer\GAL4GMR.PF is a non-enhancer of eye phenotype of Hsap\ATXN182.UAS, Scer\GAL4GMR.PF
Scer\GAL4hs.2sev/chbEP3403 is a suppressor of eye phenotype of Ras85DV12.sev
chbEP3403, Scer\GAL4GMR.PF is a non-suppressor of eye phenotype of Hsap\ATXN182.UAS, Scer\GAL4GMR.PF
Co-expression of chbEP3403 and AblScer\UAS.cFa under the control of Scer\GAL4elav.PLu in embryos results in an increased frequency of axons ectopically crossing the midline compared to embryos expressing either chbEP3403 or AblScer\UAS.cFa singly under the control of Scer\GAL4elav.PLu. Co-expression of chbEP3403 enhances the expressivity of the ISNb axons phenotype caused by expression of AblScer\UAS.cFa under the control of Scer\GAL4elav.PLu, although the effect is subtle.
Strong enhancer of ksr::torΔNksr.hs.sev and moderate suppressor of Ras85DV12.sev, when expression is driven by Scer\GAL4hs.2sev.
The rough eye phenotype caused by expression of Hsap\MAPTV337M.Scer\UAS under the control of Scer\GAL4GMR.PF is enhanced by chbEP3403.
The effects on viability, mitotic phenotype and mitotic progression suggest an allelic series: chbEP3515 < chbv40 < chbEP3403 < chbP4.
Precise excision of the P{EP} element reverts the modifying effect of chbEP3403 on the rough eye phenotype caused by expression of Hsap\MAPTV337M.Scer\UAS under the control of Scer\GAL4GMR.PF.