View in Gene3D

CATH Superfamily 1.10.10.10

Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding 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 named:

"
Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
".

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.
« Back to all FunFams

FunFam 337: Methylated-DNA--protein-cysteine methyltransferase

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
Methylated-DNA--[protein]-cysteine S-methyltransferase. [EC: 2.1.1.63]
(1) DNA (containing 6-O-methylguanine) + protein L-cysteine = DNA (without 6-O-methylguanine) + protein S-methyl-L-cysteine. (2) DNA (containing 4-O-methylthymine) + protein L-cysteine = DNA (without 4-O-methylthymine) + protein S-methyl-L-cysteine.
  • This protein is involved in the repair of methylated DNA.
  • Unlike EC 3.2.2.20 and EC 3.2.2.21, which remove the methylated base leaving an apurinic/apyrimidinic site, this enzyme transfers the methyl group from the methylated DNA to an internal cysteine residue, leaving an intact nucleotide.
  • Since the methyl transfer is irreversible, the enzyme can only catalyze a single turnover.
 2256 A0A023YWJ1 A0A023YWJ1 A0A023YWJ1 A0A023YWJ1 A0A023YWJ1 A0A023YWJ1 A0A023YWJ1 A0A023YWJ1 A0A023YWJ1 A0A023YWJ1
(2246 more...)