ID   DPO41_METMA             Reviewed;         365 AA.
AC   Q8PYH6;
DT   19-OCT-2002, integrated into UniProtKB/Swiss-Prot.
DT   19-OCT-2002, sequence version 1.
DT   03-AUG-2022, entry version 121.
DE   RecName: Full=DNA polymerase IV 1;
DE            Short=Pol IV 1;
DE            EC=2.7.7.7;
GN   Name=dbh1; OrderedLocusNames=MM_0886;
OS   Methanosarcina mazei (strain ATCC BAA-159 / DSM 3647 / Goe1 / Go1 / JCM
OS   11833 / OCM 88) (Methanosarcina frisia).
OC   Archaea; Euryarchaeota; Stenosarchaea group; Methanomicrobia;
OC   Methanosarcinales; Methanosarcinaceae; Methanosarcina.
OX   NCBI_TaxID=192952;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-159 / DSM 3647 / Goe1 / Go1 / JCM 11833 / OCM 88;
RX   PubMed=12125824;
RA   Deppenmeier U., Johann A., Hartsch T., Merkl R., Schmitz R.A.,
RA   Martinez-Arias R., Henne A., Wiezer A., Baeumer S., Jacobi C.,
RA   Brueggemann H., Lienard T., Christmann A., Boemecke M., Steckel S.,
RA   Bhattacharyya A., Lykidis A., Overbeek R., Klenk H.-P., Gunsalus R.P.,
RA   Fritz H.-J., Gottschalk G.;
RT   "The genome of Methanosarcina mazei: evidence for lateral gene transfer
RT   between Bacteria and Archaea.";
RL   J. Mol. Microbiol. Biotechnol. 4:453-461(2002).
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 (By similarity). {ECO:0000250}.
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   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Evidence={ECO:0000250};
CC       Note=Binds 2 magnesium ions per subunit. {ECO:0000250};
CC   -!- SUBUNIT: Monomer. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the DNA polymerase type-Y family. {ECO:0000305}.
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DR   EMBL; AE008384; AAM30582.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q8PYH6; -.
DR   SMR; Q8PYH6; -.
DR   STRING; 192952.MM_0886; -.
DR   EnsemblBacteria; AAM30582; AAM30582; MM_0886.
DR   KEGG; mma:MM_0886; -.
DR   PATRIC; fig|192952.21.peg.1045; -.
DR   eggNOG; arCOG04582; Archaea.
DR   HOGENOM; CLU_012348_1_2_2; -.
DR   OMA; CKPDGLL; -.
DR   Proteomes; UP000000595; 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   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; Reference proteome; Transferase.
FT   CHAIN           1..365
FT                   /note="DNA polymerase IV 1"
FT                   /id="PRO_0000173971"
FT   DOMAIN          6..196
FT                   /note="UmuC"
FT   ACT_SITE        114
FT                   /evidence="ECO:0000250"
FT   BINDING         10
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000250"
FT   BINDING         113
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000250"
FT   SITE            15
FT                   /note="Substrate discrimination"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   365 AA;  40707 MW;  12584074D25C1F44 CRC64;
     MMQRVVLHID MDYFFAAIEE RENPELREKA VVVCMLSGRS ELSGSVSTCN YVAREFGIRS
     GMPCSRAKKL NPEAVFLPVR KDFYTSVSDR IMEILRSYAD PGNGDSFEQI SVDEAFLESS
     ERTGGDFRLA FEVGMQIKKE IKEKENLTCS IGIGPNKLIS KMASSAKKPD GITVVSPQDL
     EAFLWPLNVS KLWGIGSVTA GKLQEMGIVT VKDLAERDVI ELISIFGKSR GTWLKQAASG
     IDDSPLKERD GSEQIGRIAT LPEDSLDKKL ISSLIERLAG DVIEKLDSRE LSFRIVTVTV
     INSNFRMYTK SRTLSHPVSS KEVLLQVSGE ILDEFLSENR TEFRRVGVRV GGLQKKKGQK
     SLFDY