CATH Classification

Domain Context

CATH Clusters

Superfamily Topoisomerase, domain 3
Functional Family DNA gyrase subunit A

Enzyme Information

5.6.2.3
DNA topoisomerase (ATP-hydrolyzing).
based on mapping to UniProt P0AES4
ATP-dependent breakage, passage and rejoining of double-stranded DNA.
-!- The enzyme 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 5.6.2.2). -!- Formerly EC 5.99.1.3.

UniProtKB Entries (1)

P62554
CCDB_ECOLI
Escherichia coli K-12
Toxin CcdB

PDB Structure

PDB 1X75
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Molecular Basis of Gyrase Poisoning by the Addiction Toxin CcdB
Dao-Thi, M.H., Van Melderen, L., De Genst, E., Afif, H., Buts, L., Wyns, L., Loris, R.
J.Mol.Biol.