DNA topoisomerase I; Releases the supercoiling and torsional tension of DNA, which is introduced during the DNA replication and transcription, by transiently cleaving and rejoining one strand of the DNA duplex. Introduces a single-strand break via transesterification at a target site in duplex DNA. The scissile phosphodiester is attacked by the catalytic tyrosine of the enzyme, resulting in the formation of a DNA- (5'-phosphotyrosyl)-enzyme intermediate and the expulsion of a 3'-OH DNA strand. The free DNA strand then undergoes passage around the unbroken strand, thus removing DNA supe [...]

PFAM: DEAD/DEAH box helicase domain protein; helicase domain protein; DbpA RNA-binding domain protein; type III restriction protein res subunit; SMART: DEAD-like helicase; helicase domain protein; KEGG: dde:Dde_0152 DEAD/DEAH box helicase-like; Belongs to the DEAD box helicase family.

PFAM: UvrD/REP helicase; KEGG: bba:Bd3339 ATP-dependent DNA helicase.

KEGG: plu:plu1837 hypothetical protein.

recA protein; Can catalyze the hydrolysis of ATP in the presence of single- stranded DNA, the ATP-dependent uptake of single-stranded DNA by duplex DNA, and the ATP-dependent hybridization of homologous single-stranded DNAs. It interacts with LexA causing its activation and leading to its autocatalytic cleavage; Belongs to the RecA family.

DNA mismatch repair protein MutL; This protein is involved in the repair of mismatches in DNA. It is required for dam-dependent methyl-directed DNA mismatch repair. May act as a 'molecular matchmaker', a protein that promotes the formation of a stable complex between two or more DNA-binding proteins in an ATP-dependent manner without itself being part of a final effector complex.

Ribonuclease H; Endonuclease that specifically degrades the RNA of RNA-DNA hybrids.

PFAM: AAA ATPase central domain protein; ATPase associated with various cellular activities AAA_5; SMART: AAA ATPase; KEGG: pca:Pcar_2328 recombination factor protein RarA.