DNA polymerase III, tau and gamma subunits; DNA polymerase III is a complex, multichain enzyme responsible for most of the replicative synthesis in bacteria. This DNA polymerase also exhibits 3' to 5' exonuclease activity.

DNA polymerase III, chi subunit; Residues 1 to 147 of 147 are 99.31 pct identical to residues 1 to 147 of 147 from Escherichia coli K-12 Strain MG1655: B4259.

Replicative DNA helicase; Participates in initiation and elongation during chromosome replication; it exhibits DNA-dependent ATPase activity and contains distinct active sites for ATP binding, DNA binding, and interaction with DnaC protein, primase, and other prepriming proteins.

ATP-dependent DNA helicase; Residues 1 to 611 of 611 are 99.67 pct identical to residues 1 to 610 of 610 from Escherichia coli K-12 Strain MG1655: B3822.

DNA topoisomerase type I, omega protein; 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, th [...]

Primosomal protein N'(= factor Y)(putative helicase); Involved in the restart of stalled replication forks. Recognizes and binds the arrested nascent DNA chain at stalled replication forks. It can open the DNA duplex, via its helicase activity, and promote assembly of the primosome and loading of the major replicative helicase DnaB onto DNA; Belongs to the helicase family. PriA subfamily.

DNA strand exchange and renaturation, DNA-dependent ATPase, DNA- and ATP-dependent coprotease; 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.

Exonuclease I, 3' --> 5' specific; Residues 1 to 475 of 475 are 98.94 pct identical to residues 1 to 475 of 475 from Escherichia coli K-12 Strain MG1655: B2011.

DNA-dependent ATPase I and helicase II; Residues 1 to 720 of 720 are 99.86 pct identical to residues 1 to 720 of 720 from Escherichia coli K-12 Strain MG1655: B3813.