ID   PRIS_METTH              Reviewed;         323 AA.
AC   O26685;
DT   01-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-JAN-1998, sequence version 1.
DT   03-AUG-2022, entry version 118.
DE   RecName: Full=DNA primase small subunit PriS {ECO:0000255|HAMAP-Rule:MF_00700};
DE            EC=2.7.7.- {ECO:0000255|HAMAP-Rule:MF_00700};
GN   Name=priS {ECO:0000255|HAMAP-Rule:MF_00700}; Synonyms=priA;
GN   OrderedLocusNames=MTH_585;
OS   Methanothermobacter thermautotrophicus (strain ATCC 29096 / DSM 1053 / JCM
OS   10044 / NBRC 100330 / Delta H) (Methanobacterium thermoautotrophicum).
OC   Archaea; Euryarchaeota; Methanomada group; Methanobacteria;
OC   Methanobacteriales; Methanobacteriaceae; Methanothermobacter.
OX   NCBI_TaxID=187420;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 29096 / DSM 1053 / JCM 10044 / NBRC 100330 / Delta H;
RX   PubMed=9371463; DOI=10.1128/jb.179.22.7135-7155.1997;
RA   Smith D.R., Doucette-Stamm L.A., Deloughery C., Lee H.-M., Dubois J.,
RA   Aldredge T., Bashirzadeh R., Blakely D., Cook R., Gilbert K., Harrison D.,
RA   Hoang L., Keagle P., Lumm W., Pothier B., Qiu D., Spadafora R., Vicare R.,
RA   Wang Y., Wierzbowski J., Gibson R., Jiwani N., Caruso A., Bush D.,
RA   Safer H., Patwell D., Prabhakar S., McDougall S., Shimer G., Goyal A.,
RA   Pietrovski S., Church G.M., Daniels C.J., Mao J.-I., Rice P., Noelling J.,
RA   Reeve J.N.;
RT   "Complete genome sequence of Methanobacterium thermoautotrophicum deltaH:
RT   functional analysis and comparative genomics.";
RL   J. Bacteriol. 179:7135-7155(1997).
CC   -!- FUNCTION: Catalytic subunit of DNA primase, an RNA polymerase that
CC       catalyzes the synthesis of short RNA molecules used as primers for DNA
CC       polymerase during DNA replication. The small subunit contains the
CC       primase catalytic core and has DNA synthesis activity on its own.
CC       Binding to the large subunit stabilizes and modulates the activity,
CC       increasing the rate of DNA synthesis while decreasing the length of the
CC       DNA fragments, and conferring RNA synthesis capability. The DNA
CC       polymerase activity may enable DNA primase to also catalyze primer
CC       extension after primer synthesis. May also play a role in DNA repair.
CC       {ECO:0000255|HAMAP-Rule:MF_00700}.
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00700};
CC       Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00700};
CC   -!- SUBUNIT: Heterodimer of a small subunit (PriS) and a large subunit
CC       (PriL). {ECO:0000255|HAMAP-Rule:MF_00700}.
CC   -!- SIMILARITY: Belongs to the eukaryotic-type primase small subunit
CC       family. {ECO:0000255|HAMAP-Rule:MF_00700}.
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DR   EMBL; AE000666; AAB85091.1; -; Genomic_DNA.
DR   PIR; E69177; E69177.
DR   AlphaFoldDB; O26685; -.
DR   SMR; O26685; -.
DR   STRING; 187420.MTH_585; -.
DR   EnsemblBacteria; AAB85091; AAB85091; MTH_585.
DR   KEGG; mth:MTH_585; -.
DR   PATRIC; fig|187420.15.peg.564; -.
DR   HOGENOM; CLU_056123_1_0_2; -.
DR   OMA; GYHVHVR; -.
DR   Proteomes; UP000005223; Chromosome.
DR   GO; GO:0000428; C:DNA-directed RNA polymerase 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   CDD; cd04860; AE_Prim_S; 1.
DR   HAMAP; MF_00700; DNA_primase_sml_arc; 1.
DR   InterPro; IPR002755; DNA_primase_S.
DR   InterPro; IPR014052; DNA_primase_ssu_euk/arc.
DR   InterPro; IPR023639; DNA_primase_ssu_PriS.
DR   PANTHER; PTHR10536; PTHR10536; 1.
DR   Pfam; PF01896; DNA_primase_S; 1.
DR   TIGRFAMs; TIGR00335; primase_sml; 1.
PE   3: Inferred from homology;
KW   DNA replication; DNA-directed RNA polymerase; Magnesium; Manganese;
KW   Metal-binding; Nucleotidyltransferase; Primosome; Reference proteome;
KW   Transcription; Transferase.
FT   CHAIN           1..323
FT                   /note="DNA primase small subunit PriS"
FT                   /id="PRO_0000046746"
FT   ACT_SITE        97
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00700"
FT   ACT_SITE        99
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00700"
FT   ACT_SITE        274
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00700"
SQ   SEQUENCE   323 AA;  37892 MW;  6B383D468697C2B9 CRC64;
     MMPMFEPATP LERKRYYREE WNVRDLPDFI ADNLHMREFG FDHNGRGPSD RYRVFRDERS
     LARFMRVRYP FAAYSSVAFY REPWKRKGWQ RSELIFDVDA KDLPVRSCEC DGVCPTCLDE
     ARELVLMMVD TLKGDLGLGD IHVIYSGRGY HVRVLDPEVM ELGSEVRAEI LRYTAGAREP
     RRKFTDGVSS YEMEHFSIPL GYHRVFTERA RHVLLHLRGD EDIEDVTART VKTAVRNRNL
     ILEDRWGEFR SVIGPRVYPR LVKGISKINM RMLDAKVTID LKRILRLPTS LHSKVSMICM
     EVKNPETFDP LKSAVPRFVD ERE