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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 400931: Conjugative transfer relaxase protein TraI

There are 3 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
DNA helicase. [EC: 3.6.4.12]
ATP + H(2)O = ADP + phosphate.
  • DNA helicases utilize the energy from ATP hydrolysis to unwind double-stranded DNA.
  • Some of them unwind duplex DNA with a 3' to 5' polarity (1,3,5,8), other show 5' to 3' polarity (10,11,12,13) or unwind DNA in both directions (14,15).
  • Some helicases unwind DNA as well as RNA (4,9).
  • May be identical with EC 3.6.4.13 (RNA helicase).
 47 A0A027T0C8 A0A029L3Q9 A0A029PLZ6 A0A069X3Z1 A0A070UNK3 A0A073FH29 A0A073H7C9 A0A074IHC5 A0A080FHZ8 A0A080FMR4
(37 more...)
DNA topoisomerase. [EC: 5.99.1.2]
ATP-independent breakage of single-stranded DNA, followed by passage and rejoining.
  • Brings about the conversion of one topological isomer of DNA into another, e.g. the relaxation of superhelical turns in DNA, the interconversion of simple and knotted rings of single-stranded DNA, and the intertwisting of single-stranded rings of complementary sequences (cf. EC 5.99.1.3).
 6 A0A0U5IXZ6 A0A0U5J332 A0A128AT04 A0A1J8NYQ5 P14565 P22706
Peptidylprolyl isomerase. [EC: 5.2.1.8]
Peptidylproline (omega=180) = peptidylproline (omega=0).
  • The first type of this enzyme found proved to be the protein cyclophilin, which binds the immunosuppressant cyclosporin A.
  • Other distinct families of the enzyme exist, one being FK-506 binding proteins (FKBP) and another that includes parvulin from Escherichia coli.
  • The three families are structurally unrelated and can be distinguished by being inhibited by cyclosporin A, FK-506 and 5-hydroxy-1,4-naphthoquinone, respectively.
 2 A0A193MHV9 I2RLX5
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