Imprecise excision of the progenitor insertion, leaving approximately 6kb of the original insertion in place. This results in a significant reduction in transcript levels compared to wild type.
Homozygous Cerk1 mutants are viable and have decreased fertility.
Mutant adults show progressive light induced degeneration of the rhabdomeres; rhabdomeres are seen in 1 day-old flies, but 5- and 17-day old flies have hardly any rhabdomeres and show extensive vacuolation of the photoreceptors.
Mutants show fertility defects.
5-day old mutant adults show severe photoreceptor degeneration; the cells appear vacuolated with almost no intact rhabdomeres. This degeneration phenotype is light-dependent as it is not seen in flies raised in the dark.
Mutant flies raised in the dark do not respond to light stimulus when assayed by electroretinogram recordings.
Cerk1 has viable phenotype, suppressible by bwaunspecified/bwa[+]
Cerk1 has abnormal neurophysiology phenotype, suppressible by CDaseUAS.cAa/Scer\GAL4GMR.PF
Cerk1 has abnormal neurophysiology phenotype, non-suppressible by Prosβ61
Cerk1 has rhabdomere phenotype, suppressible by CDaseUAS.cAa/Scer\GAL4GMR.PF
Cerk1 has eye photoreceptor cell phenotype, suppressible by CDaseUAS.cAa/Scer\GAL4GMR.PF
Cerk1 has rhabdomere phenotype, non-suppressible by Prosβ61
Cerk1 has eye photoreceptor cell phenotype, non-suppressible by Prosβ61
Introduction of bwaunspecified into a Cerk1 mutant background results in lethality.
Expression of CDaseScer\UAS.cAa under the control of Scer\GAL4GMR.PF rescues the lack of a light-induced electroretinogram response seen in Cerk1 flies. The light-induced retinal degeneration that is seen in Cerk1 flies is also rescued by expression of CDaseScer\UAS.cAa under the control of Scer\GAL4GMR.PF.
Pros261 cannot rescue the lack of a light-induced electroretinogram response and the retinal degeneration that is seen in Cerk1 flies.
Cerk1 is rescued by Scer\GAL4Act.PU/CerkUAS.cDa