found in neurons, a third member of the Drosophila elav gene family, encodes a neuronal protein and interacts with elav.

elav, a gene necessary for neuronal differentiation and maintenance in Drosophila, encodes the prototype of a family of conserved proteins involved in post-transcriptional regulation. We identified found in neurons (fne), a gene encoding a new ELAV paralogue. We showed that FNE binds RNA in vitro. fne transcripts are present throughout development and contain long untranslated regions. Transcripts and proteins are restricted to neurons of the CNS and PNS during embryogenesis. These features are reminiscent of elav. However, fne expression is delayed compared to elav's, and FNE protein appears cytoplasmic, while ELAV is nuclear. GAL4-directed overexpression of fne in neurons leads to a reduction of stable transcripts produced from both the fne and elav endogenous loci, suggesting that fne autoregulates and also regulates elav.

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