| 靶标 | Genome polyprotein, Leader protease, Lpro, EC:3.4.22.46, Capsid protein VP0, VP4-VP2, Capsid protein VP4, P1A, Virion protein 4, Capsid protein VP2, P1B, Virion protein 2, Capsid protein VP3, P1C, Virion protein 3, Capsid protein VP1, P1D, Virion protein 1, Protein 2A, P2A, P52, Protein 2B, P2B, Protein 2C, P2C, EC:3.6.1.15, Protein 3A, P3A, Protein 3B-1, P3B-1, Genome-linked protein VPg1, Protein 3B-2, P3B-2, Genome-linked protein VPg2, Protein 3B-3, P3B-3, Genome-linked protein VPg3, Protease 3C, EC:3.4.22.28, Picornain 3C, P3C, Protease P20B, RNA-directed RNA polymerase 3D-POL, P3D-POL, EC:2.7.7.48, P56A |
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| 背景 | Genome polyprotein (Protein 3A) is a ~259 kDa protein. Autocatalytically cleaves itself from the polyprotein at the L/VP0 junction. Also cleaves the host translation initiation factors EIF4G1 and EIF4G3, in order to shut off the capped cellular mRNA transcription. Plays a role in counteracting host innate antiviral response using diverse mechanisms. Possesses a deubiquitinase activity acting on both 'Lys-48' and 'Lys-63'-linked polyubiquitin chains. In turn, inhibits the ubiquitination and subsequent activation of key signaling molecules of type I IFN response such as host RIGI, TBK1, TRAF3 and TRAF6. |
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