CATH Classification

Domain Context

CATH Clusters

Superfamily Capsid protein VP4 superfamily, Picornavirus
Functional Family Genome polyprotein

Enzyme Information

3.4.22.28
Picornain 3C.
based on mapping to UniProt P12296
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.
-!- From entero-, rhino-, aphto- and cardioviruses. -!- Larger than the homologous virus picornain 2A. -!- Belongs to peptidase family C3.
2.7.7.48
RNA-directed RNA polymerase.
based on mapping to UniProt P12296
Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1).
-!- Catalyzes RNA-template-directed extension of the 3'-end of an RNA strand by one nucleotide at a time. -!- Can initiate a chain de novo. -!- See also EC 2.7.7.6.
3.6.4.13
RNA helicase.
based on mapping to UniProt P12296
ATP + H(2)O = ADP + phosphate.
-!- RNA helicases utilize the energy from ATP hydrolysis to unwind RNA. -!- Some of them unwind RNA with a 3' to 5' polarity, other show 5' to 3' polarity. -!- Some helicases unwind DNA as well as RNA. -!- May be identical with EC 3.6.4.12 (DNA helicase).

UniProtKB Entries (1)

P12296
POLG_ENMGO
Mengo virus
Genome polyprotein

PDB Structure

PDB 1MEC
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Conformational variability of a picornavirus capsid: pH-dependent structural changes of Mengo virus related to its host receptor attachment site and disassembly.
Kim, S., Boege, U., Krishnaswamy, S., Minor, I., Smith, T.J., Luo, M., Scraba, D.G., Rossmann, M.G.
Virology
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