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 named:

Topoisomerase I; Chain A, domain 3

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 1: DNA topoisomerase I

There are 1 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 topoisomerase. [EC:]
ATP-independent breakage of single-stranded DNA, followed by passage and rejoining.
  • These enzymes bring 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
  • Formerly EC
36 A0A0D9RN94 A0A0D9RN94 A0A2R9CGT5 A0A2R9CGT5 A0A2R9CGT5 A0A2R9CGT5 A9Q1D5 A9Q1D5 E5KMK7 E5KMK7
(26 more...)