DNA ligase (NAD); 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.

KEGG: hma:rrnAC1831 DNA polymerase B elongation subunit; PFAM: DNA polymerase B region; DNA polymerase B exonuclease; Hom_end-associated Hint domain protein; SMART: DNA-directed DNA polymerase B; Hedgehog/intein hint domain protein.

Flap endonuclease Fen1; Structure-specific nuclease with 5'-flap endonuclease and 5'- 3' exonuclease activities involved in DNA replication and repair. During DNA replication, cleaves the 5'-overhanging flap structure that is generated by displacement synthesis when DNA polymerase encounters the 5'-end of a downstream Okazaki fragment. Binds the unpaired 3'-DNA end and kinks the DNA to facilitate 5' cleavage specificity. Cleaves one nucleotide into the double-stranded DNA from the junction in flap DNA, leaving a nick for ligation. Also involved in the base excision repair (BER) pathway [...]

DNA-directed DNA polymerase X; PFAM: PHP domain protein; helix-hairpin-helix motif; KEGG: hut:Huta_2447 PHP domain protein; SMART: DNA polymerase X; Helix-hairpin-helix DNA-binding class 1; phosphoesterase PHP domain protein.

DNA-directed DNA polymerase D exonuclease subunit DP1; Possesses two activities: a DNA synthesis (polymerase) and an exonucleolytic activity that degrades single-stranded DNA in the 3' to 5' direction. Has a template-primer preference which is characteristic of a replicative DNA polymerase; Belongs to the DNA polymerase delta/II small subunit family.

DNA double-strand break repair protein Mre11; Part of the Rad50/Mre11 complex, which is involved in the early steps of DNA double-strand break (DSB) repair. Mre11 binds to DSB ends and has both double-stranded 3'-5' exonuclease activity and single-stranded endonuclease activity; Belongs to the MRE11/RAD32 family.

PFAM: PHP domain protein; KEGG: hmu:Hmuk_1743 PHP domain protein.

Replication factor C large subunit; Part of the RFC clamp loader complex which loads the PCNA sliding clamp onto DNA; Belongs to the activator 1 small subunits family. RfcL subfamily.

DNA primase small subunit; Catalytic subunit of DNA primase, an RNA polymerase that catalyzes the synthesis of short RNA molecules used as primers for DNA polymerase during DNA replication. The small subunit contains the primase catalytic core and has DNA synthesis activity on its own. Binding to the large subunit stabilizes and modulates the activity, increasing the rate of DNA synthesis while decreasing the length of the DNA fragments, and conferring RNA synthesis capability. The DNA polymerase activity may enable DNA primase to also catalyze primer extension after primer synthesis. [...]