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polX [2020-10-27 12:23:22]
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polX [2020-10-27 12:23:22]

DNA polymerase X, involved in DNA repair, generates adaptive mutations by error-prone processing of A/P sites
locus
BSU_28590
pI
5.31
mw
63.95 kDa
protein length
570 aa Sequence Blast
gene length
1713 bp Sequence Blast
function
DNA repair
product
DNA polymerase X
essential
no
ec
2.7.7.7
synonyms
yshC
Outlinks
KEGGBsubCycSubtiListUniProtExpression Browser

Genomic Context

      

categories

  • [category|SW 3|Information processing] → [category|SW 3.1|Genetics] → [category|SW 3.1.5|DNA repair/ recombination]
  • [category|SW 3|Information processing] → [category|SW 3.1|Genetics] → [category|SW 3.1.5|DNA repair/ recombination] → [category|SW 3.1.5.6|Other proteins]

    • Gene

    Coordinates
    2,923,314 → 2,925,026

    The protein

    Catalyzed reaction/ biological activity

  • template-dependent DNA polymerase, fills single nucleotide gaps [Pubmed|18938175]
  • has intrinsic 3'-5' exonuclease activity for resecting unannealed 3'-termini in gapped DNA substrates [Pubmed|18776221]
  • has intrinsic apurinic/apyrimidinic (AP) endonuclease activity [Pubmed|20974932]
  • 2'-deoxyribonucleoside 5'-triphosphate + DNA(n) --> diphosphate + DNA(n+1) (according to UniProt)

    • Protein family

  • N-terminal part: DNA polymerase type-X family (single member, according to UniProt)
  • C-terminal part: PHP family (single member, according to UniProt)

    • [SW|Domains]

  • C-terminal PHP domain with an active site formed by nine histidines and aspartates that catalyzes 3'-5' exonuclease, AP-endonuclease, 3'-phosphodiesterase and 3'-phosphatase activities [pubmed|31289311]

    • Structure

  • [PDB|3AU2] (from Thermus thermophilus, complex with dGTP, 37% identity) [pubmed|22306405]

    • Expression and Regulation

    Operons

    genes
    [gene|EAD44AA7D72510B70308FD0C9F159DBEDAEBBB74|zapA]-[gene|93726C423313C653C4F71CB107FA12F686959E41|yshB]-[gene|D3954F2BCF6CE66505E4F48FCB4A61EE8D24F6D3|polX]-[gene|F8E82D9AE514B31892FE4530532691274ADA682B|mutSB]-[gene|18CEF3F1EE2E95A009699DE370CBB44F025B7B40|yshE]
    description
    [Pubmed|22383849]

    regulation

  • constitutively expressed [Pubmed|23701187]
    • view in new tab

    Biological materials

    Mutant

  • GP3560 (Δ[gene|search|polX-mutSB]::kan), available in [SW|Jörg Stülke]'s lab
  • MGNA-B003 (yshC::erm), available at the [https://shigen.nig.ac.jp/bsub/resource/strainGeneDisrupted/detail/1002 NBRP B. subtilis, Japan]
  • BKE28590 (Δ[gene|D3954F2BCF6CE66505E4F48FCB4A61EE8D24F6D3|polX]::erm trpC2) available at [http://www.bgsc.org/getdetail.php?bgscid=BKE28590 BGSC], [Pubmed|28189581], upstream reverse: _UP1_CATATCATAACCCCCAGACG, downstream forward: _UP4_TAAGTAAGGAGGCTCACACA
  • BKK28590 (Δ[gene|D3954F2BCF6CE66505E4F48FCB4A61EE8D24F6D3|polX]::kan trpC2) available at [http://www.bgsc.org/getdetail.php?bgscid=BKK28590 BGSC], [Pubmed|28189581], upstream reverse: _UP1_CATATCATAACCCCCAGACG, downstream forward: _UP4_TAAGTAAGGAGGCTCACACA

    • labs

  • [SW|Margarita Salas], Madrid, Spain [http://www.cbm.uam.es/mkfactory.esdomain/webs/CBMSO/plt_LineasInvestigacion.aspx?IdObjeto=28 link]

    • References

    Reviews

  • 22933559

    • Original publications

  • 20974932,18938175,18776221,22844091,24914186,28254425,22306405,31289311