Nature Communications (Oct 2022)

The E3 ubiquitin ligase ARIH1 promotes antiviral immunity and autoimmunity by inducing mono-ISGylation and oligomerization of cGAS

  • Tian-Chen Xiong,
  • Ming-Cong Wei,
  • Fang-Xu Li,
  • Miao Shi,
  • Hu Gan,
  • Zhen Tang,
  • Hong-Peng Dong,
  • Tianzi Liuyu,
  • Pu Gao,
  • Bo Zhong,
  • Zhi-Dong Zhang,
  • Dandan Lin

DOI
https://doi.org/10.1038/s41467-022-33671-5
Journal volume & issue
Vol. 13, no. 1
pp. 1 – 19

Abstract

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The activity and stability of the cytosolic DNA sensor cGAS, a key mediator of innate antiviral immunity and autoimmunity, is fine-tuned by post-translational modifications. Here, the authors demonstrate that the ubiquitin E3 ligase ARIH1 catalyzes the mono-ISGylation of cGAS and promotes its oligomerization in response to viral and self DNA.