CATH Classification

Domain Context

CATH Clusters

Superfamily Homeodomain-like
Functional Family Transcriptional activator DNA repair enzyme Ada

Enzyme Information

2.1.1.63
Methylated-DNA--[protein]-cysteine S-methyltransferase.
based on mapping to UniProt P06134
DNA (containing 6-O-methylguanine) + protein L-cysteine = DNA (without 6-O-methylguanine) + protein S-methyl-L-cysteine.
-!- This protein is involved in the repair of alkylated DNA. -!- It acts only on the alkylated DNA (cf. EC 3.2.2.20 and EC 3.2.2.21). -!- This enzyme catalyzes only one turnover and therefore is not strictly catalytic.
2.1.1.n11
Methylphosphotriester-DNA--[protein]-cysteine S-methyltransferase.
based on mapping to UniProt P06134
DNA (containing Sp-methylphosphotriester) + protein L-cysteine = DNA (without Sp-methylphosphotriester) + protein S-methyl-L-cysteine.
-!- This protein is involved in the repair of Sp diastereomers of DNA methylphosphotriester lesions. -!- This enzyme catalyzes only one turnover and therefore is not strictly catalytic. -!- The enzyme from the bacterium Escherichia coli also has the activity of EC 2.1.1.63 while the enzyme from Bacillus subtilis does not.

UniProtKB Entries (1)

P06134
ADA_ECOLI
Escherichia coli K-12
Bifunctional transcriptional activator/DNA repair enzyme Ada

PDB Structure

PDB 1U8B
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
A methylation-dependent electrostatic switch controls DNA repair and transcriptional activation by E. coli ada.
He, C., Hus, J.C., Sun, L.J., Zhou, P., Norman, D.P., Dotsch, V., Wei, H., Gross, J.D., Lane, W.S., Wagner, G., Verdine, G.L.
Mol.Cell