Structural insights into the CP312R protein of the African swine fever virus
2022
Chen, Lifei | Chen, Leiqing | Chen, Huan | Zhang, Hong | Dong, PanPan | Sun, Lifang | Huang, Xiaojing | Lin, Pingdong | Wu, Linjiao | Jing, Dingding | Qian, Yingjuan | Wu, Yunkun
African swine fever (ASF) is a lethal hemorrhagic disease that affects domestic pigs and wild boars. There is no medication available for ASF to date. The ability to mount antigen-specific responses to viral vectored CP312R makes it a crucial potential target for designing vaccines or drugs. This study determined the crystal structure of ASFV CP312R at 2.32 Å and found it to be a monomer with a single-stranded DNA binding core domain with a clear five-strands β-barrel OB-fold architecture. Electrophoretic mobility shift assay and size-exclusion chromatography characterization assay further confirmed the single-stranded DNA (ssDNA)-binding property of ASFV CP312R. This study revealed the structure and preliminary ssDNA interaction mechanisms of ASFV CP312R, providing new clues for developing new antiviral strategies.
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