ID   DNAG_IGNH4              Reviewed;         441 AA.
AC   A8A8J3;
DT   26-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   23-OCT-2007, sequence version 1.
DT   03-AUG-2022, entry version 75.
DE   RecName: Full=DNA primase DnaG {ECO:0000255|HAMAP-Rule:MF_00007};
DE            EC=2.7.7.101 {ECO:0000255|HAMAP-Rule:MF_00007};
GN   Name=dnaG {ECO:0000255|HAMAP-Rule:MF_00007}; OrderedLocusNames=Igni_0061;
OS   Ignicoccus hospitalis (strain KIN4/I / DSM 18386 / JCM 14125).
OC   Archaea; Crenarchaeota; Thermoprotei; Desulfurococcales;
OC   Desulfurococcaceae; Ignicoccus.
OX   NCBI_TaxID=453591;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=KIN4/I / DSM 18386 / JCM 14125;
RX   PubMed=19000309; DOI=10.1186/gb-2008-9-11-r158;
RA   Podar M., Anderson I., Makarova K.S., Elkins J.G., Ivanova N., Wall M.A.,
RA   Lykidis A., Mavromatis K., Sun H., Hudson M.E., Chen W., Deciu C.,
RA   Hutchison D., Eads J.R., Anderson A., Fernandes F., Szeto E., Lapidus A.,
RA   Kyrpides N.C., Saier M.H. Jr., Richardson P.M., Rachel R., Huber H.,
RA   Eisen J.A., Koonin E.V., Keller M., Stetter K.O.;
RT   "A genomic analysis of the archaeal system Ignicoccus hospitalis-
RT   Nanoarchaeum equitans.";
RL   Genome Biol. 9:R158.1-R158.18(2008).
CC   -!- FUNCTION: RNA polymerase that catalyzes the synthesis of short RNA
CC       molecules used as primers for DNA polymerase during DNA replication.
CC       Also part of the exosome, which is a complex involved in RNA
CC       degradation. Acts as a poly(A)-binding protein that enhances the
CC       interaction between heteromeric, adenine-rich transcripts and the
CC       exosome. {ECO:0000255|HAMAP-Rule:MF_00007}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ssDNA + n NTP = ssDNA/pppN(pN)n-1 hybrid + (n-1) diphosphate.;
CC         EC=2.7.7.101; Evidence={ECO:0000255|HAMAP-Rule:MF_00007};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00007};
CC       Note=Binds two Mg(2+) per subunit. {ECO:0000255|HAMAP-Rule:MF_00007};
CC   -!- SUBUNIT: Forms a ternary complex with MCM helicase and DNA. Component
CC       of the archaeal exosome complex. {ECO:0000255|HAMAP-Rule:MF_00007}.
CC   -!- SIMILARITY: Belongs to the archaeal DnaG primase family.
CC       {ECO:0000255|HAMAP-Rule:MF_00007}.
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DR   EMBL; CP000816; ABU81245.1; -; Genomic_DNA.
DR   RefSeq; WP_011998097.1; NC_009776.1.
DR   AlphaFoldDB; A8A8J3; -.
DR   SMR; A8A8J3; -.
DR   STRING; 453591.Igni_0061; -.
DR   PRIDE; A8A8J3; -.
DR   EnsemblBacteria; ABU81245; ABU81245; Igni_0061.
DR   GeneID; 5561902; -.
DR   KEGG; iho:Igni_0061; -.
DR   eggNOG; arCOG04281; Archaea.
DR   HOGENOM; CLU_034626_0_0_2; -.
DR   OMA; KYMIVAQ; -.
DR   OrthoDB; 23182at2157; -.
DR   PhylomeDB; A8A8J3; -.
DR   Proteomes; UP000000262; Chromosome.
DR   GO; GO:0000428; C:DNA-directed RNA polymerase complex; IEA:UniProtKB-KW.
DR   GO; GO:0000178; C:exosome (RNase complex); IEA:UniProtKB-KW.
DR   GO; GO:1990077; C:primosome complex; IEA:UniProtKB-KW.
DR   GO; GO:0003896; F:DNA primase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0008143; F:poly(A) binding; IEA:InterPro.
DR   CDD; cd01029; TOPRIM_primases; 1.
DR   HAMAP; MF_00007; DNA_primase_DnaG_arc; 1.
DR   InterPro; IPR020607; Primase_DnaG_arc.
DR   InterPro; IPR034154; TOPRIM_DnaG/twinkle.
DR   InterPro; IPR006171; TOPRIM_domain.
DR   Pfam; PF13662; Toprim_4; 1.
DR   SMART; SM00493; TOPRIM; 1.
DR   PROSITE; PS50880; TOPRIM; 1.
PE   3: Inferred from homology;
KW   DNA replication; DNA-directed RNA polymerase; Exosome; Magnesium;
KW   Metal-binding; Nucleotidyltransferase; Primosome; Reference proteome;
KW   Transcription; Transferase.
FT   CHAIN           1..441
FT                   /note="DNA primase DnaG"
FT                   /id="PRO_0000321491"
FT   DOMAIN          165..241
FT                   /note="Toprim"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00007"
FT   REGION          299..320
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        299..314
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         171
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /ligand_note="catalytic"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00007"
FT   BINDING         215
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /ligand_note="catalytic"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00007"
FT   BINDING         215
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00007"
FT   BINDING         217
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00007"
SQ   SEQUENCE   441 AA;  48917 MW;  D1B8F4F1CAB29EA5 CRC64;
     MVKYIIKALV EVDGPVDEHD IIGAIFGQTE GLLDDFDLRE LQEKGRIGRI LVKLQRRGNK
     AVGEIYVPSN LDRVETALVA AMLESVDKVG PYPARISVVE IIDVRAEKIK KIIERAKEIL
     KKWSQEKSVD IREILKEISE TTKKSQLIEY GPEKLPAGPG VERSDTIIIV EGRADVLNLL
     RYGYDNVIAL GGATTKVPET IKKLAKEKIA IAFVDGDRGG LMVLKNLLSQ ADIDYVARAP
     PGKEVEDLTA REIAKSLSNL IPASKMKEEL LKVEKLQKEE VKEVAEKAEK VEAEEVVKKE
     EVAERGEEME SKAEGAEQPT ATALEKAAAK EEVKQEVKTE EEKVKEYVMF IPDSVFEKAK
     EITGTLRSVL YDSQWNIVAE VPAKDVVSAI EEKGAYAVLH DGVITQRMLD VMSLKGGRLI
     LGRRVARVSK RPKGVFVVLL S