The Exon Junction Complex Component Y14 Modulates the Activity of the Methylosome in Biogenesis of Spliceosomal Small Nuclear Ribonucleoproteins*

  title={The Exon Junction Complex Component Y14 Modulates the Activity of the Methylosome in Biogenesis of Spliceosomal Small Nuclear Ribonucleoproteins*},
  author={Tzu-Wei Chuang and Pey-Jey Peng and Woan-Yuh Tarn},
  journal={The Journal of Biological Chemistry},
  pages={8722 - 8728}
The RNA-binding protein Y14 heterodimerizes with Mago as the core of the exon junction complex during precursor mRNA splicing and plays a role in mRNA surveillance in the cytoplasm. Using the Y14/Magoh heterodimer as bait in a screening for its interacting partners, we identified the protein-arginine methyltransferase PRMT5 as a candidate. We show that Y14 and Magoh, but not other factors of the exon junction complex, interact with the cytoplasmic PRMT5-containing methylosome. We further… 

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