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CATH Superfamily 3.40.50.300

P-loop containing nucleotide triphosphate hydrolases

The name of this superfamily has been modified since the most recent official CATH+ release (v4_2_0). At the point of the last release, this superfamily was named:

"
P-loop containing nucleotide triphosphate hydrolases
".

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 633466: Regulator of nonsense transcripts 1

There are 5 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
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.
 2 A0A060T9U1 A0A170YR63
Phospholipid-translocating ATPase. [EC: 3.6.3.1]
ATP + H(2)O + phospholipid(Side 1) = ADP + phosphate + phospholipid(Side 2).
  • P-type ATPase that undergoes covalent phosphorylation during the transport cycle.
  • The enzyme apparently has several activities, one of them being the movement of phospholipids from one membrane face to the other.
  • Formerly EC 3.6.3.13.
 2 A0A0G2F2N5 A0A0K8L7H0
Dynamin GTPase. [EC: 3.6.5.5]
GTP + H(2)O = GDP + phosphate.
  • An enzyme with a molecular mass of about 100 kDa that is involved in endocytosis and is instrumental in pinching off membrane vesicles.
  • Formerly EC 3.6.1.50.
 1 M2Y6V5
Exodeoxyribonuclease V. [EC: 3.1.11.5]
Exonucleolytic cleavage (in the presence of ATP) in either 5'- to 3'- or 3'- to 5'-direction to yield 5'-phosphooligonucleotides.
  • Preference for double-stranded DNA.
  • Possesses DNA-dependent ATPase activity.
  • Acts endonucleolytically on single-stranded circular DNA.
  • Similar enzyme: Haemophilus influenzae ATP-dependent DNase.
 1 G0QUQ0
DNA topoisomerase (ATP-hydrolyzing). [EC: 5.99.1.3]
ATP-dependent breakage, passage and rejoining of double-stranded DNA.
  • Can introduce negative superhelical turns into double-stranded circular DNA.
  • One unit has nicking-closing activity, and another catalyzes super- twisting and hydrolysis of ATP (cf. EC 5.99.1.2).
 1 B0EFD7
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