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CATH Superfamily 3.30.70.270

Reverse transcriptase/Diguanylate cyclase domain

The name of this superfamily has been modified since the most recent official CATH+ release (v4_3_0). At the point of the last release, this superfamily was: waiting to be named.

Functional Families

Overview of the Structural Clusters (SC) and Functional Families within this CATH Superfamily. Clusters with a representative structure are represented by a filled circle.
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FunFam 92: Genome polyprotein

There are 4 EC terms in this cluster

Please note: EC annotations are assigned to the full protein sequence rather than individual protein domains. Since a given protein can contain multiple domains, it is possible that some of the annotations below come from additional domains that occur in the same protein, but have been classified elsewhere in CATH.

Note: The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.

EC Term Annotations Evidence
RNA-directed RNA polymerase. [EC: 2.7.7.48]
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 O73556 Q66578 Q9YID8
Picornain 3C. [EC: 3.4.22.28]
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 O73556 Q66578 Q9YID8
Picornain 2A. [EC: 3.4.22.29]
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 O73556 Q66578 Q9YID8
Nucleoside-triphosphate phosphatase. [EC: 3.6.1.15]
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.
 3 O73556 Q66578 Q9YID8
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