CATH Classification

Domain Context

CATH Clusters

Superfamily 2.60.120.20
Functional Family Genome polyprotein

Enzyme Information

3.4.22.29
Picornain 2A.
based on mapping to UniProt Q82122
Selective cleavage of Tyr-|-Gly bond in the picornavirus polyprotein.
-!- From entero- and rhinoviruses. -!- Smaller than the homologous virus picornain 3C. -!- Belongs to peptidase family C3.
3.4.22.28
Picornain 3C.
based on mapping to UniProt Q82122
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.
3.6.1.15
Nucleoside-triphosphate phosphatase.
based on mapping to UniProt Q82122
NTP + H(2)O = NDP + phosphate.
-!- The enzyme is found in eukaryotes and thermophilic bacteria, but appears to be absent from mesophilic bacteria. -!- Also hydrolyzes nucleoside diphosphates, thiamine diphosphate and FAD. -!- The enzyme from the plant Pisum sativum (garden pea) is regulated by calmodulin.
2.7.7.48
RNA-directed RNA polymerase.
based on mapping to UniProt Q82122
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.

UniProtKB Entries (2)

P23008
POLG_HRV1A
Human rhinovirus 1A
Genome polyprotein
Q82122
POLG_HRV16
Human rhinovirus A16
Genome polyprotein

PDB Structure

PDB 1AYM
External Links
Method X-RAY DIFFRACTION
Organism Homo
Primary Citation
The refined structure of human rhinovirus 16 at 2.15 A resolution: implications for the viral life cycle.
Hadfield, A.T., Lee, W., Zhao, R., Oliveira, M.A., Minor, I., Rueckert, R.R., Rossmann, M.G.
Structure