ID G0QD75_NANSJ Unreviewed; 515 AA.
AC G0QD75;
DT 19-OCT-2011, integrated into UniProtKB/TrEMBL.
DT 19-OCT-2011, sequence version 1.
DT 27-MAR-2024, entry version 44.
DE RecName: Full=DNA polymerase II small subunit {ECO:0000256|HAMAP-Rule:MF_00325};
DE Short=Pol II {ECO:0000256|HAMAP-Rule:MF_00325};
DE EC=2.7.7.7 {ECO:0000256|HAMAP-Rule:MF_00325};
DE AltName: Full=Exodeoxyribonuclease small subunit {ECO:0000256|HAMAP-Rule:MF_00325};
DE EC=3.1.11.1 {ECO:0000256|HAMAP-Rule:MF_00325};
GN Name=polB {ECO:0000256|HAMAP-Rule:MF_00325};
GN ORFNames=J07AB56_09510 {ECO:0000313|EMBL:EGQ40223.1};
OS Nanosalinarum sp. (strain J07AB56).
OC Archaea; Euryarchaeota; Stenosarchaea group; Candidatus Nanohaloarchaea;
OC Nanosalinarum.
OX NCBI_TaxID=889962 {ECO:0000313|EMBL:EGQ40223.1, ECO:0000313|Proteomes:UP000009382};
RN [1] {ECO:0000313|EMBL:EGQ40223.1, ECO:0000313|Proteomes:UP000009382}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA Narasingarao P., Podell S., Ugalde J.A., Brochier-Armanet C., Emerson J.B.,
RA Brocks J.J., Heidelberg K.B., Banfield J.F., Allen E.E.;
RT "De novo metagenomic assembly reveals abundant novel major lineage of
RT Archaea in hypersaline microbial communities.";
RL ISME J. 0:0-0(2011).
CC -!- FUNCTION: Possesses two activities: a DNA synthesis (polymerase) and an
CC exonucleolytic activity that degrades single-stranded DNA in the 3' to
CC 5' direction. Has a template-primer preference which is characteristic
CC of a replicative DNA polymerase. {ECO:0000256|ARBA:ARBA00024817,
CC ECO:0000256|HAMAP-Rule:MF_00325}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=Exonucleolytic cleavage in the 3'- to 5'-direction to yield
CC nucleoside 5'-phosphates.; EC=3.1.11.1;
CC Evidence={ECO:0000256|ARBA:ARBA00000563, ECO:0000256|HAMAP-
CC Rule:MF_00325};
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 Evidence={ECO:0000256|ARBA:ARBA00024632, ECO:0000256|HAMAP-
CC Rule:MF_00325};
CC -!- SUBUNIT: Heterodimer of a large subunit and a small subunit.
CC {ECO:0000256|ARBA:ARBA00011315, ECO:0000256|HAMAP-Rule:MF_00325}.
CC -!- SIMILARITY: Belongs to the DNA polymerase delta/II small subunit
CC family. {ECO:0000256|ARBA:ARBA00006035, ECO:0000256|HAMAP-
CC Rule:MF_00325}.
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DR EMBL; GL982569; EGQ40223.1; -; Genomic_DNA.
DR AlphaFoldDB; G0QD75; -.
DR HOGENOM; CLU_027850_1_0_2; -.
DR Proteomes; UP000009382; Unassembled WGS sequence.
DR GO; GO:0003677; F:DNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0003887; F:DNA-directed DNA polymerase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0008310; F:single-stranded DNA 3'-5' DNA exonuclease activity; IEA:UniProtKB-EC.
DR GO; GO:0006308; P:DNA catabolic process; IEA:UniProtKB-UniRule.
DR GO; GO:0006261; P:DNA-templated DNA replication; IEA:UniProtKB-UniRule.
DR Gene3D; 3.60.21.50; -; 1.
DR HAMAP; MF_00325; DNApol_II_A_arch; 1.
DR InterPro; IPR007185; DNA_pol_a/d/e_bsu.
DR InterPro; IPR024826; DNA_pol_delta/II_ssu.
DR InterPro; IPR029052; Metallo-depent_PP-like.
DR InterPro; IPR011149; Pol2_small_arc.
DR PANTHER; PTHR10416; DNA POLYMERASE DELTA SUBUNIT 2; 1.
DR PANTHER; PTHR10416:SF0; DNA POLYMERASE DELTA SUBUNIT 2; 1.
DR Pfam; PF04042; DNA_pol_E_B; 1.
DR PIRSF; PIRSF000803; Arc_Pol2_small; 1.
DR SUPFAM; SSF56300; Metallo-dependent phosphatases; 1.
PE 3: Inferred from homology;
KW DNA replication {ECO:0000256|ARBA:ARBA00022705, ECO:0000256|HAMAP-
KW Rule:MF_00325};
KW DNA-binding {ECO:0000256|ARBA:ARBA00023125, ECO:0000256|HAMAP-
KW Rule:MF_00325};
KW DNA-directed DNA polymerase {ECO:0000256|ARBA:ARBA00022932,
KW ECO:0000256|HAMAP-Rule:MF_00325};
KW Exonuclease {ECO:0000256|ARBA:ARBA00022839, ECO:0000256|HAMAP-
KW Rule:MF_00325}; Hydrolase {ECO:0000256|HAMAP-Rule:MF_00325};
KW Multifunctional enzyme {ECO:0000256|ARBA:ARBA00023268, ECO:0000256|HAMAP-
KW Rule:MF_00325}; Nuclease {ECO:0000256|HAMAP-Rule:MF_00325};
KW Nucleotidyltransferase {ECO:0000256|ARBA:ARBA00022695, ECO:0000256|HAMAP-
KW Rule:MF_00325}; Reference proteome {ECO:0000313|Proteomes:UP000009382};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_00325}.
FT DOMAIN 257..459
FT /note="DNA polymerase alpha/delta/epsilon subunit B"
FT /evidence="ECO:0000259|Pfam:PF04042"
FT REGION 63..108
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 65..87
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ SEQUENCE 515 AA; 58348 MW; 47052C3E54DB7162 CRC64;
MNREALRQLT EIGINVAPEA AQRLEENDIE RIQRLDTDPM YLSGPMLDRL REAVDLPSEV
EVESKDQVVV QSQSDGQQNA GGAKQETHTD SDSARNVGGG IELEDSGRRN SLETKVEILD
DHEITKKEKD VPEFLEYYND RYDRMKEMLT RRKELQSATT LNRLSRRDEG EQAAAIGLVS
DKYSTNSGRY IVELQDKTGS FKVLVDGDEG DRLVPDEVIG VTGSMGDDIV FANQVVHPDL
PIPDGVNTTQ QEVQAAYISD LHIGSQDTMH DALDRFGDWL RSDEASNIGY LVIAGDIVEG
VGVYPGQEEE LEITDVYRQY RRFEEWAEKL PDRIELIIGP GNHDVVRLAE PQPTLPEKAF
DNIHTWDNVH LVQNPQTVRL HGIRSQGIKH LMYHGMSYDD HVSRIKELRE NAYDQPEYVM
EDLLKRRHVA PSYGSNPLSP EGTDAMVIEH EPDVFVSGHF HSHCDESYKG VNMICSSSFQ
SQTDYQKRVG HQPQPGIVTI MDFETRKTTT KKFKQ
//
