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dnaA | Chromosomal replication initiator protein DnaA; Plays an important role in the initiation and regulation of chromosomal replication. Binds to the origin of replication; it binds specifically double-stranded DNA at a 9 bp consensus (dnaA box): 5'- TTATC[CA]A[CA]A-3'. DnaA binds to ATP and to acidic phospholipids. (463 aa) | ||||
recF | DNA replication and repair protein RecF; The RecF protein is involved in DNA metabolism; it is required for DNA replication and normal SOS inducibility. RecF binds preferentially to single-stranded, linear DNA. It also seems to bind ATP. (361 aa) | ||||
gyrB | DNA gyrase, B subunit; A type II topoisomerase that negatively supercoils closed circular double-stranded (ds) DNA in an ATP-dependent manner to modulate DNA topology and maintain chromosomes in an underwound state. Negative supercoiling favors strand separation, and DNA replication, transcription, recombination and repair, all of which involve strand separation. Also able to catalyze the interconversion of other topological isomers of dsDNA rings, including catenanes and knotted rings. Type II topoisomerases break and join 2 DNA strands simultaneously in an ATP-dependent manner. (804 aa) | ||||
rep | ATP-dependent DNA helicase Rep; Rep helicase is a single-stranded DNA-dependent ATPase involved in DNA replication; it can initiate unwinding at a nick in the DNA. It binds to the single-stranded DNA and acts in a progressive fashion along the DNA in the 3' to 5' direction. (674 aa) | ||||
Spro_0186 | TIGRFAM: DNA helicase II; PFAM: UvrD/REP helicase; KEGG: yen:YE0196 DNA helicase II. (723 aa) | ||||
Spro_0193 | KEGG: ypi:YpsIP31758_0218 ATP-dependent DNA helicase RecQ; TIGRFAM: ATP-dependent DNA helicase, RecQ family; ATP-dependent DNA helicase RecQ; PFAM: helicase domain protein; HRDC domain protein; DEAD/DEAH box helicase domain protein; Helicase superfamily 1 and 2 ATP-binding; SMART: DEAD-like helicases. (614 aa) | ||||
mutL | 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. (624 aa) | ||||
deaD | DEAD/DEAH box helicase domain protein; DEAD-box RNA helicase involved in various cellular processes at low temperature, including ribosome biogenesis, mRNA degradation and translation initiation. (653 aa) | ||||
radA | DNA repair protein RadA; DNA-dependent ATPase involved in processing of recombination intermediates, plays a role in repairing DNA breaks. Stimulates the branch migration of RecA-mediated strand transfer reactions, allowing the 3' invading strand to extend heteroduplex DNA faster. Binds ssDNA in the presence of ADP but not other nucleotides, has ATPase activity that is stimulated by ssDNA and various branched DNA structures, but inhibited by SSB. Does not have RecA's homology-searching function. (461 aa) | ||||
rapA | SNF2-related protein; Transcription regulator that activates transcription by stimulating RNA polymerase (RNAP) recycling in case of stress conditions such as supercoiled DNA or high salt concentrations. Probably acts by releasing the RNAP, when it is trapped or immobilized on tightly supercoiled DNA. Does not activate transcription on linear DNA. Probably not involved in DNA repair; Belongs to the SNF2/RAD54 helicase family. RapA subfamily. (968 aa) | ||||
Spro_0731 | KEGG: yen:YE0637 DNA polymerase II; PFAM: DNA polymerase B exonuclease; DNA polymerase B region; SMART: DNA-directed DNA polymerase B. (787 aa) | ||||
yacG | Protein of unknown function DUF329; Inhibits all the catalytic activities of DNA gyrase by preventing its interaction with DNA. Acts by binding directly to the C- terminal domain of GyrB, which probably disrupts DNA binding by the gyrase. (67 aa) | ||||
mutS | DNA mismatch repair protein MutS; This protein is involved in the repair of mismatches in DNA. It is possible that it carries out the mismatch recognition step. This protein has a weak ATPase activity. (851 aa) | ||||
recA | 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. (353 aa) | ||||
recX | Regulatory protein RecX; Modulates RecA activity; Belongs to the RecX family. (168 aa) | ||||
sbcC | Exonuclease SbcC; SbcCD cleaves DNA hairpin structures. These structures can inhibit DNA replication and are intermediates in certain DNA recombination reactions. The complex acts as a 3'->5' double strand exonuclease that can open hairpins. It also has a 5' single-strand endonuclease activity; Belongs to the SMC family. SbcC subfamily. (1083 aa) | ||||
sbcD | Nuclease SbcCD, D subunit; SbcCD cleaves DNA hairpin structures. These structures can inhibit DNA replication and are intermediates in certain DNA recombination reactions. The complex acts as a 3'->5' double strand exonuclease that can open hairpins. It also has a 5' single-strand endonuclease activity; Belongs to the SbcD family. (410 aa) | ||||
Spro_1167 | KEGG: yen:YE3046 hypothetical protein. (70 aa) | ||||
uvrB | Excinuclease ABC, B subunit; 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 [...] (670 aa) | ||||
dinG | Helicase c2; DNA-dependent ATPase and 5'-3' DNA helicase. (732 aa) | ||||
Spro_1685 | PFAM: magnesium chelatase ChlI subunit; AAA ATPase central domain protein; SMART: AAA ATPase; KEGG: yen:YE1527 putative ATPase protein. (447 aa) | ||||
uvrC | Excinuclease ABC, C subunit; 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. (610 aa) | ||||
mfd | Transcription-repair coupling factor; Couples transcription and DNA repair by recognizing RNA polymerase (RNAP) stalled at DNA lesions. Mediates ATP-dependent release of RNAP and its truncated transcript from the DNA, and recruitment of nucleotide excision repair machinery to the damaged site; In the C-terminal section; belongs to the helicase family. RecG subfamily. (1176 aa) | ||||
nth | Endonuclease III; DNA repair enzyme that has both DNA N-glycosylase activity and AP-lyase activity. The DNA N-glycosylase activity releases various damaged pyrimidines from DNA by cleaving the N-glycosidic bond, leaving an AP (apurinic/apyrimidinic) site. The AP-lyase activity cleaves the phosphodiester bond 3' to the AP site by a beta-elimination, leaving a 3'-terminal unsaturated sugar and a product with a terminal 5'- phosphate. (213 aa) | ||||
Spro_2581 | methylated-DNA--protein-cysteine methyltransferase; Involved in the cellular defense against the biological effects of O6-methylguanine (O6-MeG) and O4-methylthymine (O4-MeT) in DNA. Repairs the methylated nucleobase in DNA by stoichiometrically transferring the methyl group to a cysteine residue in the enzyme. This is a suicide reaction: the enzyme is irreversibly inactivated. (198 aa) | ||||
Spro_2715 | TIGRFAM: exodeoxyribonuclease III; exodeoxyribonuclease III Xth; PFAM: Endonuclease/exonuclease/phosphatase; KEGG: ypi:YpsIP31758_1976 exodeoxyribonuclease III. (268 aa) | ||||
Spro_2763 | SMART: helicase c2; DEAD-like helicases; KEGG: ypi:YpsIP31758_2017 hypothetical protein. (634 aa) | ||||
ruvB | Holliday junction DNA helicase RuvB; The RuvA-RuvB complex in the presence of ATP renatures cruciform structure in supercoiled DNA with palindromic sequence, indicating that it may promote strand exchange reactions in homologous recombination. RuvAB is a helicase that mediates the Holliday junction migration by localized denaturation and reannealing. (334 aa) | ||||
ruvA | Holliday junction DNA helicase RuvA; The RuvA-RuvB complex in the presence of ATP renatures cruciform structure in supercoiled DNA with palindromic sequence, indicating that it may promote strand exchange reactions in homologous recombination. RuvAB is a helicase that mediates the Holliday junction migration by localized denaturation and reannealing. RuvA stimulates, in the presence of DNA, the weak ATPase activity of RuvB. (203 aa) | ||||
ruvC | Crossover junction endodeoxyribonuclease RuvC; 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. (173 aa) | ||||
nfo | Apurinic endonuclease Apn1; Endonuclease IV plays a role in DNA repair. It cleaves phosphodiester bonds at apurinic or apyrimidinic (AP) sites, generating a 3'-hydroxyl group and a 5'-terminal sugar phosphate. (279 aa) | ||||
Spro_3253 | PFAM: helicase domain protein; type III restriction protein res subunit; DEAD/DEAH box helicase domain protein; SMART: DEAD-like helicases; KEGG: yen:YE1423 putative DEAD box helicase family protein. (585 aa) | ||||
gyrA | DNA gyrase, A subunit; A type II topoisomerase that negatively supercoils closed circular double-stranded (ds) DNA in an ATP-dependent manner to modulate DNA topology and maintain chromosomes in an underwound state. Negative supercoiling favors strand separation, and DNA replication, transcription, recombination and repair, all of which involve strand separation. Also able to catalyze the interconversion of other topological isomers of dsDNA rings, including catenanes and knotted rings. Type II topoisomerases break and join 2 DNA strands simultaneously in an ATP-dependent manner. (882 aa) | ||||
Spro_3519 | PFAM: Chromosomal replication initiator DnaA; KEGG: yen:YE1130 hypothetical protein. (203 aa) | ||||
Spro_3547 | PFAM: helix-turn-helix- domain containing protein AraC type; HhH-GPD family protein; Ada metal-binding domain protein; AlkA domain protein; KEGG: reh:H16_B2551 DNA-3-methyladenine glycosylase II, adenosine deaminase. (512 aa) | ||||
ung | uracil-DNA glycosylase; Excises uracil residues from the DNA which can arise as a result of misincorporation of dUMP residues by DNA polymerase or due to deamination of cytosine. (227 aa) | ||||
xni | 5'-3' exonuclease; Has flap endonuclease activity. During DNA replication, flap endonucleases cleave the 5'-overhanging flap structure that is generated by displacement synthesis when DNA polymerase encounters the 5'-end of a downstream Okazaki fragment. (251 aa) | ||||
Spro_4064 | KEGG: stt:t4291 UV protection protein. (136 aa) | ||||
parC | DNA topoisomerase IV, A subunit; Topoisomerase IV is essential for chromosome segregation. It relaxes supercoiled DNA. Performs the decatenation events required during the replication of a circular DNA molecule; Belongs to the type II topoisomerase GyrA/ParC subunit family. ParC type 1 subfamily. (757 aa) | ||||
parE | DNA topoisomerase IV, B subunit; Topoisomerase IV is essential for chromosome segregation. It relaxes supercoiled DNA. Performs the decatenation events required during the replication of a circular DNA molecule; Belongs to the type II topoisomerase family. ParE type 1 subfamily. (631 aa) | ||||
uvrA | Excinuclease ABC, A subunit; The UvrABC repair system catalyzes the recognition and processing of DNA lesions. UvrA is an ATPase and a DNA-binding protein. A damage recognition complex composed of 2 UvrA and 2 UvrB subunits scans DNA for abnormalities. When the presence of a lesion has been verified by UvrB, the UvrA molecules dissociate. (943 aa) | ||||
Spro_4842 | PFAM: DNA repair protein RadC; KEGG: ypi:YpsIP31758_0061 DNA repair protein RadC; Belongs to the UPF0758 family. YicR subfamily. (227 aa) | ||||
polA | DNA polymerase I; In addition to polymerase activity, this DNA polymerase exhibits 5'-3' exonuclease activity; Belongs to the DNA polymerase type-A family. (934 aa) |