Maheshvara, a Conserved RNA Helicase, Regulates Notch Signaling in Drosophila melanogaster.

Gene expression is regulated at multiple steps after generation of primary RNA transcripts, including mRNA processing, stability, and transport, along with co- and post-transcriptional regulation. These processes are controlled via the involvement of a multitude of RNA binding proteins (RBPs). Innumerable human diseases have been associated with altered expression of RNA binding proteins. In this chapter we have focused on Maheshvara (mahe) which encodes a putative DEAD box RNA helicase protein in Drosophila. We have recently reported that mahe plays an important role in regulation of Notch signaling. Fine tuning of Notch signaling is required at multiple steps and it's misregulation leads to a variety of human diseases. Additionally, mutation in DDX59, a human homolog of mahe results in broad neurological phenotypes associated with orofaciodigital syndrome. Drosophila mahe mutants show abnormal peripheral and central nervous system development that resemble neuropathology of patients having mutation in DDX59 gene. This chapter will help in advancing the knowledge as to how mahe regulates Notch signaling and nervous system development.

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