ID A0A0S8DI83_9BACT Unreviewed; 437 AA.
AC A0A0S8DI83;
DT 17-FEB-2016, integrated into UniProtKB/TrEMBL.
DT 17-FEB-2016, sequence version 1.
DT 28-JUN-2023, entry version 23.
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=AMK70_05055 {ECO:0000313|EMBL:KPK35554.1};
OS Nitrospira bacterium SG8_35_1.
OC Bacteria; Nitrospirota; Nitrospiria.
OX NCBI_TaxID=1704024 {ECO:0000313|EMBL:KPK35554.1, ECO:0000313|Proteomes:UP000052010};
RN [1] {ECO:0000313|EMBL:KPK35554.1, ECO:0000313|Proteomes:UP000052010}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SG8_35_1 {ECO:0000313|EMBL:KPK35554.1};
RX PubMed=25922666; DOI=10.1186/s40168-015-0077-6;
RA Baker B.J., Lazar C.S., Teske A.P., Dick G.J.;
RT "Genomic resolution of linkages in carbon, nitrogen, and sulfur cycling
RT among widespread estuary sediment bacteria.";
RL Microbiome 3:14-14(2015).
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|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: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|HAMAP-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}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:KPK35554.1}.
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DR EMBL; LJTK01000067; KPK35554.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A0S8DI83; -.
DR PATRIC; fig|1704024.3.peg.3504; -.
DR Proteomes; UP000052010; 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; IPR043128; Rev_trsase/Diguanyl_cyclase.
DR InterPro; IPR001126; UmuC.
DR PANTHER; PTHR11076; DNA REPAIR POLYMERASE UMUC / TRANSFERASE FAMILY MEMBER; 1.
DR PANTHER; PTHR11076:SF34; PROTEIN UMUC; 1.
DR Pfam; PF00817; IMS; 1.
DR Pfam; PF11799; IMS_C; 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|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|HAMAP-Rule:MF_01113};
KW Nucleotidyltransferase {ECO:0000256|HAMAP-Rule:MF_01113};
KW Transferase {ECO:0000256|HAMAP-Rule:MF_01113, ECO:0000313|EMBL:KPK35554.1}.
FT DOMAIN 15..194
FT /note="UmuC"
FT /evidence="ECO:0000259|PROSITE:PS50173"
FT ACT_SITE 112
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01113"
FT BINDING 19
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01113"
FT BINDING 111
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01113"
FT SITE 24
FT /note="Substrate discrimination"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01113"
SQ SEQUENCE 437 AA; 49361 MW; 83ED51E3200621D8 CRC64;
MTDQPLTIGS WPQAILHMDA DAFFAACEQA IHPELRGKPV ITGKERGIVA AASYEAKARG
ITRAMGLVDA KKICPDVIAM PSDYETYSLF SVRMFEILRR FSPDVEEYSI DEAFVDLTGL
RRKFHSSYGR IAEQIQATVH RELGITVSIG VSLSKVLAKA GSKYNKPHGL TVIPGRDIHR
YLDRLPVEKV WGIGPNTSAF MNKLGIRTAL AFARKDEQFV KKHFTRPHQE IWCELNGISV
YPVTAESKST YQSISKTKTF TPPSTDREFV FAQLSKNLEN ACIKARRYGL AAKRLILFLR
KKDFRSIGVE LKLSRTTSYP AELFDSLRKG FDQIYESTIP YRLTGVVLGG LEPESRVQFT
LFDDPARIEK MEKLYHSVDE LSARFGKHTV QHASSLPAKL QMQHDGDRGD TAMRKSSLFR
GENRRQRLGM PMLHVNV
//
