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STM0479 | Putative transposase; Similar to E. coli orf, hypothetical protein (AAC75365.1); Blastp hit to AAC75365.1 (296 aa), 49% identity in aa 7 - 296. (311 aa) | ||||
polB | DNA polymerase II; 3'->5' exonuclease; similar to E. coli DNA polymerase II (AAC73171.1); Blastp hit to AAC73171.1 (783 aa), 89% identity in aa 1 - 783. (783 aa) | ||||
res | DNA restriction (DNA helicase); Cleaves DNA some 25 base-pairs downstream from the recognition site. May also act as a helicase involved in unwinding DNA at the cleavage site. Protein only required for restriction but needs the presence of the modification enzyme; Belongs to the type III restriction-modification system res protein family. (990 aa) | ||||
sbcD | ATP-dependent dsDNA exonuclease; 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. (400 aa) | ||||
xseB | Exonuclease VII, small subunit; Bidirectionally degrades single-stranded DNA into large acid- insoluble oligonucleotides, which are then degraded further into small acid-soluble oligonucleotides; Belongs to the XseB family. (80 aa) | ||||
uvrB | UvrB with UvrAC is a DNA excision repair enzyme; 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 [...] (673 aa) | ||||
STM1009 | Gifsy-2 prophage exodeoxyribonuclease; Exodeoxyribonuclease VIII homolog (gi|7467238). (961 aa) | ||||
ycfH | Putative metal-dependent hydrolase; Similar to E. coli orf, hypothetical protein (AAC74184.1); Blastp hit to AAC74184.1 (265 aa), 93% identity in aa 1 - 265. (265 aa) | ||||
xthA | Exonuclease III; Major apurinic-apyrimidinic endonuclease of E.coli. It removes the damaged DNA at cytosines and guanines by cleaving on the 3'-side of the AP site by a beta-elimination reaction. It exhibits 3'- 5'-exonuclease, 3'-phosphomonoesterase, 3'-repair diesterase and ribonuclease H activities (By similarity). (268 aa) | ||||
ydaL | Putative Smr domain protein; Similar to E. coli orf, hypothetical protein (AAC74422.1); Blastp hit to AAC74422.1 (187 aa), 86% identity in aa 1 - 187. (187 aa) | ||||
trpH | trpR controlled transcriptional unit in the 5' upstream region of the trp operon; Efficiently catalyzes the hydrolysis of the 3'-phosphate from 3',5'-bis-phosphonucleotides as well as the successive hydrolysis of 5'-phosphomononucleotides from the 5'-end of short pieces of RNA and DNA, with no specificity toward the identity of the nucleotide base. Is more efficient at hydrolyzing RNA oligonucleotides than DNA oligonucleotides. This enzyme can also hydrolyze annealed DNA duplexes, albeit at a catalytic efficiency lower than that of the corresponding single-stranded oligonucleotides. (293 aa) | ||||
ruvC | Holliday junction nuclease; 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) | ||||
uvrC | UvrC; 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) | ||||
sbcB | 3' --> 5' specific; deoxyribophosphodiesterase; similar to E. coli exonuclease I, 3' --> 5' specific; deoxyribophosphodiesterase (AAC75072.1); Blastp hit to AAC75072.1 (475 aa), 93% identity in aa 8 - 475. (476 aa) | ||||
nfo | Endonuclease IV; 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. (285 aa) | ||||
xseA | Exonuclease VII, large subunit; Bidirectionally degrades single-stranded DNA into large acid- insoluble oligonucleotides, which are then degraded further into small acid-soluble oligonucleotides; Belongs to the XseA family. (449 aa) | ||||
cas1 | Putative cytoplasmic protein; CRISPR (clustered regularly interspaced short palindromic repeat), is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain spacers, sequences complementary to antecedent mobile elements, and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). Acts as a dsDNA endonuclease. Involved in the integration of spacer DNA into the CRISPR cassette. (306 aa) | ||||
exo | Exonuclease IX, 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. (271 aa) | ||||
recD | Exonuclease V, alpha chain; A helicase/nuclease that prepares dsDNA breaks (DSB) for recombinational DNA repair. Binds to DSBs and unwinds DNA via a highly rapid and processive ATP-dependent bidirectional helicase activity. Unwinds dsDNA until it encounters a Chi (crossover hotspot instigator) sequence from the 3' direction. Cuts ssDNA a few nucleotides 3' to the Chi site. The properties and activities of the enzyme are changed at Chi. The Chi-altered holoenzyme produces a long 3'-ssDNA overhang and facilitates RecA-binding to the ssDNA for homologous DNA recombination and repair. Holo [...] (611 aa) | ||||
recB | Exonuclease V, beta chain; A helicase/nuclease that prepares dsDNA breaks (DSB) for recombinational DNA repair. Binds to DSBs and unwinds DNA via a highly rapid and processive ATP-dependent bidirectional helicase activity. Unwinds dsDNA until it encounters a Chi (crossover hotspot instigator) sequence from the 3' direction. Cuts ssDNA a few nucleotides 3' to the Chi site. The properties and activities of the enzyme are changed at Chi. The Chi-altered holoenzyme produces a long 3'-ssDNA overhang and facilitates RecA-binding to the ssDNA for homologous DNA recombination and repair. Holoe [...] (1181 aa) | ||||
recC | Exonuclease V, subunit; A helicase/nuclease that prepares dsDNA breaks (DSB) for recombinational DNA repair. Binds to DSBs and unwinds DNA via a highly rapid and processive ATP-dependent bidirectional helicase activity. Unwinds dsDNA until it encounters a Chi (crossover hotspot instigator) sequence from the 3' direction. Cuts ssDNA a few nucleotides 3' to the Chi site. The properties and activities of the enzyme are changed at Chi. The Chi-altered holoenzyme produces a long 3'-ssDNA overhang and facilitates RecA-binding to the ssDNA for homologous DNA recombination and repair. Holoenzy [...] (1123 aa) | ||||
endA | Similar to E. coli DNA-specific endonuclease I (AAC75982.1); Blastp hit to AAC75982.1 (235 aa), 87% identity in aa 1 - 235. (235 aa) | ||||
STM3508 | Putative cytoplasmic protein; Similar to E. coli orf, hypothetical protein (AAC75365.1); Blastp hit to AAC75365.1 (296 aa), 67% identity in aa 1 - 296. (304 aa) | ||||
STM3766 | Putative cytoplasmic protein; Similar to E. coli orf, hypothetical protein (AAC75365.1); Blastp hit to AAC75365.1 (296 aa), 67% identity in aa 1 - 278, 45% identity in aa 216 - 296. (313 aa) | ||||
yigW | Putative hydrolase of PHP superfamily; 3'-5' exonuclease that prefers single-stranded DNA and RNA. May play a role in the H(2)O(2)-induced DNA damage repair. Belongs to the metallo-dependent hydrolases superfamily. TatD-type hydrolase family. TatD subfamily. (260 aa) | ||||
nfi | Endonuclease V; DNA repair enzyme involved in the repair of deaminated bases. Selectively cleaves double-stranded DNA at the second phosphodiester bond 3' to a deoxyinosine leaving behind the intact lesion on the nicked DNA. (223 aa) | ||||
uvrA | DNA excision repair enzyme; 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; Belongs to the ABC transporter superfamily. UvrA family. (941 aa) | ||||
STM4490 | Putative Mrr restriction endonuclease. (329 aa) | ||||
STM4518 | Putative inner membrane protein; Similar to E. coli orf, hypothetical protein (AAC75304.1); Blastp hit to AAC75304.1 (299 aa), 45% identity in aa 187 - 277, 73% identity in aa 1 - 42, 36% identity in aa 216 - 295. (171 aa) | ||||
hsdR | Host restriction; similar to E. coli host restriction; endonuclease R (AAC77306.1); Blastp hit to AAC77306.1 (1188 aa), 91% identity in aa 20 - 1188. (1169 aa) | ||||
mrr | Similar to E. coli restriction of methylated adenine (AAC77307.1); Blastp hit to AAC77307.1 (304 aa), 77% identity in aa 1 - 304. (304 aa) |