Nature Communications (Nov 2022)

A redox switch regulates the assembly and anti-CRISPR activity of AcrIIC1

  • Yanan Zhao,
  • Jiaojiao Hu,
  • Shan-Shan Yang,
  • Jing Zhong,
  • Jianping Liu,
  • Shuo Wang,
  • Yuzhuo Jiao,
  • Fang Jiang,
  • Ruiyang Zhai,
  • Bingnan Ren,
  • Hua Cong,
  • Yuwei Zhu,
  • Fengtong Han,
  • Jixian Zhang,
  • Yue Xu,
  • Zhiwei Huang,
  • Shengnan Zhang,
  • Fan Yang

DOI
https://doi.org/10.1038/s41467-022-34551-8
Journal volume & issue
Vol. 13, no. 1
pp. 1 – 13

Abstract

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Here, the authors report the discovery of a redox switch for AcrIIC1, which regulates AcrIIC1’s monomer-dimer interconversion and inhibitory activity on Cas9. By reporting the structures of different redox states of NmeAcrIIC1, they identify a pair of conserved cysteines which mediate the redox switch. The replacement of the redox-sensitive cysteines allows the generation of a more stable and robust variant under various cellular environments.