Crossover junction endodeoxyribonuclease; Nuclease that resolves Holliday junction intermediates in genetic recombination. Cleaves the cruciform structure in supercoiled DNA by nicking to strands with the same polarity at sites symmetrically opposed at the junction in the homologous arms and leaves a 5'-terminal phosphate and a 3'-terminal hydroxyl group.

COGs: COG0658 membrane metal-binding protein; InterPro IPR004477: IPR000073; KEGG: rba:RB9840 competence protein ComEC/Rec2; PFAM: ComEC/Rec2-related protein; alpha/beta hydrolase fold; SPTR: Probable competence protein; TIGRFAM: ComEC/Rec2-related protein; PFAM: Competence protein; Metallo-beta-lactamase superfamily; X-Pro dipeptidyl-peptidase (S15 family); TIGRFAM: ComEC/Rec2-related protein; DNA internalization-related competence protein ComEC/Rec2.

Excinuclease ABC C subunit domain protein; The UvrABC repair system catalyzes the recognition and processing of DNA lesions. UvrC both incises the 5' and 3' sides of the lesion. The N-terminal half is responsible for the 3' incision and the C-terminal half is responsible for the 5' incision.

COGs: COG0749 DNA polymerase I - 3'-5' exonuclease and polymerase domains; InterProIPR020046: IPR020047: IPR001098: IPR002421: IPR 008918: IPR002298: IPR018320: IPR019760; KEGG: plm:Plim_3011 DNA polymerase I; PFAM: DNA-directed DNA polymerase; 5'-3' exonuclease, N-terminal resolvase-like domain; 5'-3' exonuclease, SAM-fold domain; SMART: DNA-directed DNA polymerase; 5'-3' exonuclease; Helix-hairpin-helix domain protein class 2; SPTR: DNA polymerase I; TIGRFAM: DNA polymerase I; PFAM: 5'-3' exonuclease, C-terminal SAM fold; 5'-3' exonuclease, N-terminal resolvase-like domain; DNA polym [...]

Protein-export membrane protein SecD; Part of the Sec protein translocase complex. Interacts with the SecYEG preprotein conducting channel. SecDF uses the proton motive force (PMF) to complete protein translocation after the ATP-dependent function of SecA.

Excinuclease ABC subunit B; The UvrABC repair system catalyzes the recognition and processing of DNA lesions. A damage recognition complex composed of 2 UvrA and 2 UvrB subunits scans DNA for abnormalities. Upon binding of the UvrA(2)B(2) complex to a putative damaged site, the DNA wraps around one UvrB monomer. DNA wrap is dependent on ATP binding by UvrB and probably causes local melting of the DNA helix, facilitating insertion of UvrB beta-hairpin between the DNA strands. Then UvrB probes one DNA strand for the presence of a lesion. If a lesion is found the UvrA subunits dissociate [...]

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 [...]

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.