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Database: UniProt
Entry: A0A1G6TV38_9PROT
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ID   A0A1G6TV38_9PROT        Unreviewed;       381 AA.
AC   A0A1G6TV38;
DT   22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT   22-NOV-2017, sequence version 1.
DT   24-JAN-2024, entry version 20.
DE   RecName: Full=DNA polymerase IV {ECO:0000256|HAMAP-Rule:MF_01113};
DE            Short=Pol IV {ECO:0000256|HAMAP-Rule:MF_01113};
DE            EC=2.7.7.7 {ECO:0000256|HAMAP-Rule:MF_01113};
GN   Name=dinB {ECO:0000256|HAMAP-Rule:MF_01113};
GN   ORFNames=SAMN04487779_1006181 {ECO:0000313|EMBL:SDD32175.1};
OS   Belnapia rosea.
OC   Bacteria; Pseudomonadota; Alphaproteobacteria; Rhodospirillales;
OC   Acetobacteraceae; Belnapia.
OX   NCBI_TaxID=938405 {ECO:0000313|EMBL:SDD32175.1, ECO:0000313|Proteomes:UP000198925};
RN   [1] {ECO:0000313|EMBL:SDD32175.1, ECO:0000313|Proteomes:UP000198925}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CPCC 100156 {ECO:0000313|EMBL:SDD32175.1,
RC   ECO:0000313|Proteomes:UP000198925};
RA   de Groot N.N.;
RL   Submitted (OCT-2016) to the EMBL/GenBank/DDBJ databases.
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:0000256|ARBA:ARBA00025589, ECO:0000256|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;
CC         Evidence={ECO:0000256|ARBA:ARBA00024632, ECO:0000256|HAMAP-
CC         Rule:MF_01113};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000256|HAMAP-Rule:MF_01113};
CC       Note=Binds 2 magnesium ions per subunit. {ECO:0000256|HAMAP-
CC       Rule:MF_01113};
CC   -!- SUBUNIT: Monomer. {ECO:0000256|ARBA:ARBA00011245, ECO:0000256|HAMAP-
CC       Rule:MF_01113}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_01113}.
CC   -!- SIMILARITY: Belongs to the DNA polymerase type-Y family.
CC       {ECO:0000256|ARBA:ARBA00010945, ECO:0000256|HAMAP-Rule:MF_01113}.
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DR   EMBL; FMZX01000006; SDD32175.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0A1G6TV38; -.
DR   STRING; 938405.SAMN02927895_02294; -.
DR   Proteomes; UP000198925; Unassembled WGS sequence.
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; 3.30.70.270; -; 1.
DR   Gene3D; 3.40.1170.60; -; 1.
DR   Gene3D; 1.10.150.20; 5' to 3' exonuclease, C-terminal subdomain; 1.
DR   Gene3D; 3.30.1490.100; DNA polymerase, Y-family, little finger domain; 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   PANTHER; PTHR11076:SF33; DNA POLYMERASE KAPPA; 1.
DR   PANTHER; PTHR11076; DNA REPAIR POLYMERASE UMUC / TRANSFERASE FAMILY MEMBER; 1.
DR   Pfam; PF00817; IMS; 1.
DR   Pfam; PF11799; IMS_C; 1.
DR   Pfam; PF11798; IMS_HHH; 1.
DR   SUPFAM; SSF56672; DNA/RNA polymerases; 1.
DR   SUPFAM; SSF100879; Lesion bypass DNA polymerase (Y-family), little finger domain; 1.
DR   PROSITE; PS50173; UMUC; 1.
PE   3: Inferred from homology;
KW   Cytoplasm {ECO:0000256|HAMAP-Rule:MF_01113};
KW   DNA damage {ECO:0000256|HAMAP-Rule:MF_01113};
KW   DNA repair {ECO:0000256|HAMAP-Rule:MF_01113};
KW   DNA replication {ECO:0000256|HAMAP-Rule:MF_01113};
KW   DNA-binding {ECO:0000256|HAMAP-Rule:MF_01113};
KW   DNA-directed DNA polymerase {ECO:0000256|ARBA:ARBA00022932,
KW   ECO:0000256|HAMAP-Rule:MF_01113};
KW   Magnesium {ECO:0000256|HAMAP-Rule:MF_01113};
KW   Metal-binding {ECO:0000256|HAMAP-Rule:MF_01113};
KW   Mutator protein {ECO:0000256|ARBA:ARBA00022457, ECO:0000256|HAMAP-
KW   Rule:MF_01113}; Nucleotidyltransferase {ECO:0000256|HAMAP-Rule:MF_01113};
KW   Reference proteome {ECO:0000313|Proteomes:UP000198925};
KW   Transferase {ECO:0000256|HAMAP-Rule:MF_01113}.
FT   DOMAIN          31..211
FT                   /note="UmuC"
FT                   /evidence="ECO:0000259|PROSITE:PS50173"
FT   REGION          1..21
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   ACT_SITE        130
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01113"
FT   BINDING         35
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01113"
FT   BINDING         129
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01113"
FT   SITE            40
FT                   /note="Substrate discrimination"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01113"
SQ   SEQUENCE   381 AA;  41709 MW;  602E40E37A02DB7C CRC64;
     MSDASHDASQ GKIDQAGRNG AAAEVVRPRK IIHIDMDAFY ASVEQRDNPA LRSLPVAVGG
     SRERGVVAAA SYEARKFGVH SAMPSVTARR KCPELIFVPP RFDVYKAVSL QIRGIFAEYT
     PMIEPLSLDE AYLDVTENLP GIATATEIAQ RIRARIRQET ALTASAGVSY NKFLAKLASD
     HRKPDGLFVI TPRMGPAYVE DLPVSKFHGV GPATAARMNQ LGIQTGLDLR AHSLAFLQQH
     FGKAGAYYYW IARAIDDRPV RPDRIRKSVG AENTFSADLF TLGEAHGALQ PIFQKVWCYC
     DSTGIRGRTV TLKVKYADFS QATRSRTAAA PISSQHELER VGLALLEPLF PVPKGIRLLG
     ITLSTLNDQP RQTAAQLRLS V
//
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