ID   DPO3E_RICFE             Reviewed;         229 AA.
AC   Q4UN31;
DT   20-MAR-2007, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2005, sequence version 1.
DT   03-AUG-2022, entry version 94.
DE   RecName: Full=DNA polymerase III subunit epsilon;
DE            EC=2.7.7.7;
GN   Name=dnaQ; OrderedLocusNames=RF_0176;
OS   Rickettsia felis (strain ATCC VR-1525 / URRWXCal2) (Rickettsia azadi).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rickettsiales;
OC   Rickettsiaceae; Rickettsieae; Rickettsia; spotted fever group.
OX   NCBI_TaxID=315456;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC VR-1525 / URRWXCal2;
RX   PubMed=15984913; DOI=10.1371/journal.pbio.0030248;
RA   Ogata H., Renesto P., Audic S., Robert C., Blanc G., Fournier P.-E.,
RA   Parinello H., Claverie J.-M., Raoult D.;
RT   "The genome sequence of Rickettsia felis identifies the first putative
RT   conjugative plasmid in an obligate intracellular parasite.";
RL   PLoS Biol. 3:1-12(2005).
CC   -!- FUNCTION: DNA polymerase III is a complex, multichain enzyme
CC       responsible for most of the replicative synthesis in bacteria. The
CC       epsilon subunit contain the editing function and is a proofreading 3'-
CC       5' exonuclease (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       Name=Mn(2+); Xref=ChEBI:CHEBI:29035; Evidence={ECO:0000250};
CC       Note=Binds 2 divalent metal cations. Magnesium or manganese.
CC       {ECO:0000250};
CC   -!- SUBUNIT: DNA polymerase III contains a core (composed of alpha, epsilon
CC       and theta chains) that associates with a tau subunit. This core
CC       dimerizes to form the POLIII' complex. PolIII' associates with the
CC       gamma complex (composed of gamma, delta, delta', psi and chi chains)
CC       and with the beta chain to form the complete DNA polymerase III complex
CC       (By similarity). {ECO:0000250}.
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DR   EMBL; CP000053; AAY61027.1; -; Genomic_DNA.
DR   RefSeq; WP_011270528.1; NC_007109.1.
DR   AlphaFoldDB; Q4UN31; -.
DR   SMR; Q4UN31; -.
DR   STRING; 315456.RF_0176; -.
DR   EnsemblBacteria; AAY61027; AAY61027; RF_0176.
DR   KEGG; rfe:RF_0176; -.
DR   eggNOG; COG0847; Bacteria.
DR   HOGENOM; CLU_047806_2_0_5; -.
DR   OMA; FHVYLNP; -.
DR   OrthoDB; 1985371at2; -.
DR   Proteomes; UP000008548; Chromosome.
DR   GO; GO:0003677; F:DNA binding; IEA:InterPro.
DR   GO; GO:0003887; F:DNA-directed DNA polymerase activity; IEA:UniProtKB-KW.
DR   GO; GO:0004527; F:exonuclease activity; IEA:UniProtKB-KW.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0006260; P:DNA replication; IEA:UniProtKB-KW.
DR   CDD; cd06131; DNA_pol_III_epsilon_Ecoli_like; 1.
DR   Gene3D; 3.30.420.10; -; 1.
DR   InterPro; IPR006054; DnaQ.
DR   InterPro; IPR006309; DnaQ_proteo.
DR   InterPro; IPR013520; Exonuclease_RNaseT/DNA_pol3.
DR   InterPro; IPR012337; RNaseH-like_sf.
DR   InterPro; IPR036397; RNaseH_sf.
DR   Pfam; PF00929; RNase_T; 1.
DR   SMART; SM00479; EXOIII; 1.
DR   SUPFAM; SSF53098; SSF53098; 1.
DR   TIGRFAMs; TIGR00573; dnaq; 1.
DR   TIGRFAMs; TIGR01406; dnaQ_proteo; 1.
PE   3: Inferred from homology;
KW   DNA replication; DNA-directed DNA polymerase; Exonuclease; Hydrolase;
KW   Magnesium; Manganese; Metal-binding; Nuclease; Nucleotidyltransferase;
KW   Transferase.
FT   CHAIN           1..229
FT                   /note="DNA polymerase III subunit epsilon"
FT                   /id="PRO_0000280953"
FT   ACT_SITE        156
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000250"
FT   BINDING         10
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /ligand_label="1"
FT                   /ligand_note="catalytic"
FT                   /evidence="ECO:0000250"
FT   BINDING         10
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /ligand_label="2"
FT                   /ligand_note="catalytic"
FT                   /evidence="ECO:0000250"
FT   BINDING         10
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         12
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /ligand_label="1"
FT                   /ligand_note="catalytic"
FT                   /evidence="ECO:0000250"
FT   BINDING         12
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         55
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         60
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         161
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /ligand_label="1"
FT                   /ligand_note="catalytic"
FT                   /evidence="ECO:0000250"
FT   BINDING         161
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   229 AA;  25944 MW;  6E9A94748CE2C0AE CRC64;
     MSSLREIILD TETTGLDPRQ GHRIVEIGAI EMVNKVLTGR NFHFYINPER DMPFDAYRIH
     GISGEFLKDK PLFHTIADDF LEFISDSKLI IHNAPFDIKF LNHELSLLKR AEIKLLELSN
     AIDTLVMARS MFPGSKYNLD ALCKRFKVDN SGRQLHGALK DAALLAEVYV ELTGGRQSAF
     KMVDKSVETN NLATNQVNNK TEQATIVIKP TKEELQKHKE FLSSILKTA