CATH Classification
| Level | CATH Code | Description |
|---|---|---|
|
3 | Alpha Beta |
|
3.30 | 2-Layer Sandwich |
|
3.30.70 | Alpha-Beta Plaits |
|
3.30.70.270 | Reverse transcriptase/Diguanylate cyclase domain |
Domain Context
CATH Clusters
| Superfamily | 3.30.70.270 |
| Functional Family |
Enzyme Information
| 3.4.22.46 |
L-peptidase.
based on mapping to UniProt P03311
Autocatalytically cleaves itself from the polyprotein of the foot- and-mouth disease virus by hydrolysis of a Lys-|-Gly bond, but then cleaves host cell initiation factor eIF-4G at bonds -Gly-|-Arg- and -Lys-|-Arg-.
-!- Best known from foot-and-mouth disease virus, but occurs in other aphthoviruses and cardioviruses. -!- Destruction of initiation factor eIF-4G has the effect of shutting off host-cell protein synthesis while allowing synthesis of viral proteins to continue. -!- The tertiary structure reveals a distant relationship to papain and, consistent with this, compound E-64 is inhibitory. -!- Belongs to peptidase family C28.
|
| 2.7.7.48 |
RNA-directed RNA polymerase.
based on mapping to UniProt P03311
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.
|
| 3.4.22.28 |
Picornain 3C.
based on mapping to UniProt P03311
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 P03311
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.
|
UniProtKB Entries (1)
| P03311 |
POLG_FMDVS
Foot-and-mouth disease virus (strain C1-Santa Pau)
Genome polyprotein
|
PDB Structure
| PDB | 5N8X |
| External Links | |
| Method | X-RAY DIFFRACTION |
| Organism | |
| Primary Citation |
Molecular and Functional Bases of Selection against a Mutation Bias in an RNA Virus.
Genome Biol Evol
|