DPO4_STRPN
ID DPO4_STRPN Reviewed; 353 AA.
AC Q97SC7;
DT 02-AUG-2002, integrated into UniProtKB/Swiss-Prot.
DT 16-AUG-2005, sequence version 2.
DT 03-AUG-2022, entry version 122.
DE RecName: Full=DNA polymerase IV {ECO:0000255|HAMAP-Rule:MF_01113};
DE Short=Pol IV {ECO:0000255|HAMAP-Rule:MF_01113};
DE EC=2.7.7.7 {ECO:0000255|HAMAP-Rule:MF_01113};
GN Name=dinB {ECO:0000255|HAMAP-Rule:MF_01113}; OrderedLocusNames=SP_0458;
OS Streptococcus pneumoniae serotype 4 (strain ATCC BAA-334 / TIGR4).
OC Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC Streptococcus.
OX NCBI_TaxID=170187;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-334 / TIGR4;
RX PubMed=11463916; DOI=10.1126/science.1061217;
RA Tettelin H., Nelson K.E., Paulsen I.T., Eisen J.A., Read T.D.,
RA Peterson S.N., Heidelberg J.F., DeBoy R.T., Haft D.H., Dodson R.J.,
RA Durkin A.S., Gwinn M.L., Kolonay J.F., Nelson W.C., Peterson J.D.,
RA Umayam L.A., White O., Salzberg S.L., Lewis M.R., Radune D.,
RA Holtzapple E.K., Khouri H.M., Wolf A.M., Utterback T.R., Hansen C.L.,
RA McDonald L.A., Feldblyum T.V., Angiuoli S.V., Dickinson T., Hickey E.K.,
RA Holt I.E., Loftus B.J., Yang F., Smith H.O., Venter J.C., Dougherty B.A.,
RA Morrison D.A., Hollingshead S.K., Fraser C.M.;
RT "Complete genome sequence of a virulent isolate of Streptococcus
RT pneumoniae.";
RL Science 293:498-506(2001).
CC -!- FUNCTION: Poorly processive, error-prone DNA polymerase involved in
CC untargeted mutagenesis. Copies undamaged DNA at stalled replication
CC forks, which arise in vivo from mismatched or misaligned primer ends.
CC These misaligned primers can be extended by PolIV. Exhibits no 3'-5'
CC exonuclease (proofreading) activity. May be involved in translesional
CC synthesis, in conjunction with the beta clamp from PolIII.
CC {ECO:0000255|HAMAP-Rule:MF_01113}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a 2'-deoxyribonucleoside 5'-triphosphate + DNA(n) =
CC diphosphate + DNA(n+1); Xref=Rhea:RHEA:22508, Rhea:RHEA-COMP:17339,
CC Rhea:RHEA-COMP:17340, ChEBI:CHEBI:33019, ChEBI:CHEBI:61560,
CC ChEBI:CHEBI:173112; EC=2.7.7.7; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01113};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01113};
CC Note=Binds 2 magnesium ions per subunit. {ECO:0000255|HAMAP-
CC Rule:MF_01113};
CC -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_01113}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01113}.
CC -!- SIMILARITY: Belongs to the DNA polymerase type-Y family.
CC {ECO:0000255|HAMAP-Rule:MF_01113}.
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DR EMBL; AE005672; AAK74618.1; -; Genomic_DNA.
DR PIR; A95053; A95053.
DR RefSeq; WP_000904591.1; NZ_AKVY01000001.1.
DR AlphaFoldDB; Q97SC7; -.
DR SMR; Q97SC7; -.
DR STRING; 170187.SP_0458; -.
DR EnsemblBacteria; AAK74618; AAK74618; SP_0458.
DR KEGG; spn:SP_0458; -.
DR eggNOG; COG0389; Bacteria.
DR OMA; KVRRYDF; -.
DR PhylomeDB; Q97SC7; -.
DR BioCyc; SPNE170187:G1FZB-474-MON; -.
DR Proteomes; UP000000585; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0003684; F:damaged DNA binding; IEA:InterPro.
DR GO; GO:0003887; F:DNA-directed DNA polymerase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0006281; P:DNA repair; IEA:UniProtKB-UniRule.
DR GO; GO:0006261; P:DNA-templated DNA replication; IEA:UniProtKB-UniRule.
DR GO; GO:0009432; P:SOS response; IEA:UniProt.
DR CDD; cd03586; PolY_Pol_IV_kappa; 1.
DR Gene3D; 3.30.1490.100; -; 1.
DR Gene3D; 3.30.70.270; -; 1.
DR HAMAP; MF_01113; DNApol_IV; 1.
DR InterPro; IPR043502; DNA/RNA_pol_sf.
DR InterPro; IPR036775; DNA_pol_Y-fam_lit_finger_sf.
DR InterPro; IPR017961; DNA_pol_Y-fam_little_finger.
DR InterPro; IPR022880; DNApol_IV.
DR InterPro; IPR024728; PolY_HhH_motif.
DR InterPro; IPR043128; Rev_trsase/Diguanyl_cyclase.
DR InterPro; IPR001126; UmuC.
DR Pfam; PF00817; IMS; 1.
DR Pfam; PF11799; IMS_C; 1.
DR Pfam; PF11798; IMS_HHH; 1.
DR SUPFAM; SSF100879; SSF100879; 1.
DR SUPFAM; SSF56672; SSF56672; 1.
DR PROSITE; PS50173; UMUC; 1.
PE 3: Inferred from homology;
KW Cytoplasm; DNA damage; DNA repair; DNA replication; DNA-binding;
KW DNA-directed DNA polymerase; Magnesium; Metal-binding; Mutator protein;
KW Nucleotidyltransferase; Transferase.
FT CHAIN 1..353
FT /note="DNA polymerase IV"
FT /id="PRO_0000173954"
FT DOMAIN 14..198
FT /note="UmuC"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01113"
FT ACT_SITE 117
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01113"
FT BINDING 18
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01113"
FT BINDING 116
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01113"
FT SITE 23
FT /note="Substrate discrimination"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01113"
SQ SEQUENCE 353 AA; 39880 MW; 655A75051A0448BB CRC64;
MLIFPLLNDL SRKIIHIDMD AFFAAVEIRD NPKLRGKPVI IGSDPRQTGG RGVVSTCSYE
ARAFGVHSAM SSKEAYERCP QAVFISGNYE KYKSVGLQIR AIFKRYTDLI EPMSIDEAYL
DVTENKLGIK SAVKIARLIQ KDIWQELHLT ASAGVSYNKF LAKMASDYQK PHGLTVILPE
QAEDFLKQMD ISKFHGVGKK TVERLHQMGV FTGADLLEVP EVTLIDRFGR LGYDLYRKAR
GIHNSPVKSN RIRKSIGKEK TYGKILLAEE DIKKELTLLS EKVALNLHQQ EKAGKIVILK
IRYEDFSTLT KRKSLAQKTQ DASQISQIAL QLYEELSKKE RGVRLLGITM TGF
