DNA ligase; DNA ligase that catalyzes the formation of phosphodiester linkages between 5'-phosphoryl and 3'-hydroxyl groups in double- stranded DNA using NAD as a coenzyme and as the energy source for the reaction. It is essential for DNA replication and repair of damaged DNA.

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 dissociat [...]

Multifunctional SOS repair factor; Multifunctional protein involved in homologous recombination, DNA repair and competence. Can catalyze the hydrolysis of (d)ATP in the presence of single-stranded DNA; prefers dATP at least in vitro, catalyzes the dATP-dependent uptake of single- stranded DNA by duplex DNA, and the dATP-dependent hybridization of homologous single-stranded DNAs (strand exchange). RecA-ATP cannot catalyze homologous DNA strand exchange; SsbA and DprA activate strand exchange by RecA-ATP. It interacts with LexA causing its activation and leading to its autocatalytic clea [...]

ATP-dependent DNA helicase; Probable DNA helicase. Required in synaptic and/or post- synaptic stages of recombination. Probably has overlapping function with RecQ (AC O34748). It probably acts to help generate ss-DNA from ds-DNA breaks.

Putative lipoprotein; Evidence 3: Function proposed based on presence of conserved amino acid motif, structural feature or limited homology; lipoprotein.

Heptaprenylglyceryl-phosphate synthase; Prenyltransferase that catalyzes in vivo the transfer of the heptaprenyl moiety of heptaprenyl pyrophosphate (HepPP; 35 carbon atoms) to the C3 hydroxyl of sn-glycerol-1-phosphate (G1P), producing heptaprenylglyceryl phosphate (HepGP). This reaction is an ether-bond- formation step in the biosynthesis of archaea-type G1P-based membrane lipids found in Bacillales. To a much lesser extent, is also able to use geranyl diphosphate (GPP; C10) and geranylgeranyl diphosphate (GGPP; C20) as the prenyl donors, but not farnesyl pyrophosphate (FPP; C15). Ca [...]

Ribonuclease toxin of toxin-antitoxin systems RttI-RttJ; Probable DNA helicase. Required for DNA repair and intramolecular recombination; probably has overlapping function with RecS (AC P50729). It probably acts to help generate ss-DNA from ds-DNA breaks; Belongs to the helicase family. RecQ subfamily.

Damage inducible ATP-dependent 3'->5' nuclease; 3'-5' exonuclease.

DNA polymerase III (beta subunit); Confers DNA tethering and processivity to DNA polymerases and other proteins. Acts as a clamp, forming a ring around DNA (a reaction catalyzed by the clamp-loading complex) which diffuses in an ATP- independent manner freely and bidirectionally along dsDNA. Initially characterized for its ability to contact the catalytic subunit of DNA polymerase III (Pol III), a complex, multichain enzyme responsible for most of the replicative synthesis in bacteria; Pol III exhibits 3'-5' exonuclease proofreading activity. The beta chain is required for initiation o [...]