Genome polyprotein - P03311 (POLG_FMDVS)


Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for P03311: 11
Leader protease: Autocatalytically cleaves itself from the polyprotein at the L/VP0 junction. Cleaves also the host translation initiation factors EIF4G1 and EIF4G3, in order to shutoff 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 DDX58, TBK1, TRAF3 and TRAF6. Inhibits host NF-kappa-B activity by inducing a decrease in RELA mRNA levels. Cleaves a peptide bond in the C-terminus of host ISG15, resulting in the damaging of this mofidier that can no longer be attached to target proteins. Cleaves also host G3BP1 and G3BP2 in order to inhibit cytoplasmic stress granules assembly. UniProt
Catalytic Activity
Selective cleavage of Gln-|-Gly bond in the poliovirus polyprotein. In other picornavirus reactions Glu may be substituted for Gln, and Ser or Thr for Gly. UniProt
Pathway Maps
      ESCHER  BiGG
Subunit Structure
Leader protease: Interacts with host ISG15. Capsid protein VP1: Interacts (via R-G-D motif) with host ITGAV/ITGB6. Protein 2B: Forms homooligomers. Protein 2C: Interacts with host VIM. Interacts with host BECN1. Protein 3A: Interacts with host DCTN3. UniProt
  • Organism: isolate Bovine/Germany/O1Kaufbeuren/1966 serotype O
  • Length:
  • UniProt
  • Isoforms: 2 , currently showing only the 'canonical' sequence.
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