Human SMG-1, a novel phosphatidylinositol 3-kinase-related protein kinase, associates with components of the mRNA surveillance complex and is involved in the regulation of nonsense-mediated mRNA decay.

@article{Yamashita2001HumanSA,
  title={Human SMG-1, a novel phosphatidylinositol 3-kinase-related protein kinase, associates with components of the mRNA surveillance complex and is involved in the regulation of nonsense-mediated mRNA decay.},
  author={Akio Yamashita and Tetsuo Ohnishi and Isao Kashima and Yoichi Taya and Shigeo Ohno},
  journal={Genes & development},
  year={2001},
  volume={15 17},
  pages={2215-28}
}
Nonsense-mediated mRNA decay (NMD) is a conserved surveillance mechanism that eliminates imperfect mRNAs that contain premature translation termination codons (PTCs) and code for nonfunctional or potentially harmful polypeptides. We show that a novel phosphatidylinositol 3-kinase-related protein kinase, hSMG-1, is a human ortholog of a product of Caenorhabditis elegans smg-1, one of seven smg genes involved in NMD. hSMG-1 phosphorylates hUPF1/SMG-2 in vivo and in vitro at specific serine… CONTINUE READING
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