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View Article and Find Full Text PDFIn Drosophila, some neurons develop sex-specific neurites that contribute to dimorphic circuits for sex-specific behavior. As opposed to the idea that the sexual dichotomy in transcriptional profiles produced by a sex-specific factor underlies such sex differences, we discovered that the sex-specific cleavage confers the activity as a sexual-fate inducer on the pleiotropic transcription factor Longitudinals lacking (Lola). Surprisingly, Fruitless, another transcription factor with a master regulator role for courtship circuitry formation, directly binds to Lola to protect its cleavage in males.
View Article and Find Full Text PDFSexual recognition among individuals is crucial for the reproduction of animals. In Drosophila, like in many other animals, pheromones are suggested to play an important role in conveying information about an individual, such as sex, maturity and mating status. Sex-specific cuticular hydrocarbon components are thought to be major sex pheromones in Drosophila, and are postulated to act through the gustatory system, since they are mostly non-volatile chemicals.
View Article and Find Full Text PDFArch Insect Biochem Physiol
August 2010
The ELAV family of RNA-binding proteins is involved in various aspects of the post-transcriptional regulation of gene expression, from alternative splicing to translation. The members of this family have been shown to interact with each other and have been suggested to function as homo- and/or hetero-multimers. However, the functional interactions among them have not been demonstrated in vivo.
View Article and Find Full Text PDFNucleic Acids Res
March 2008
ELAV is a neuron-specific RNA-binding protein in Drosophila that is required for development and maintenance of neurons. ELAV regulates alternative splicing of Neuroglian and erect wing (ewg) transcripts, and has been shown to form a multimeric complex on the last ewg intron. The protein has three RNA recognition motifs (RRM1, 2 and 3) with a hinge region between RRM2 and 3.
View Article and Find Full Text PDFDrosophila ELAV and human HuD are two neuronal RNA binding proteins that show remarkable sequence homology, yet differ in their respective documented roles in post-transcriptional regulation. ELAV regulates neural-specific alternative splicing of specific transcripts, and HuD stabilizes specific mRNAs that are otherwise unstable due to AU-rich elements (AREs) in their 3' untranslated region (UTR). AREs are major determinants of transcript stability in mammalian cells.
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