ID A0A1W6SLS9_9PROT Unreviewed; 369 AA.
AC A0A1W6SLS9;
DT 05-JUL-2017, integrated into UniProtKB/TrEMBL.
DT 05-JUL-2017, sequence version 1.
DT 27-MAR-2024, entry version 21.
DE RecName: Full=Beta sliding clamp {ECO:0000256|ARBA:ARBA00021035, ECO:0000256|PIRNR:PIRNR000804};
GN ORFNames=EBAPG3_002550 {ECO:0000313|EMBL:ARO86742.1};
OS Nitrosospira lacus.
OC Bacteria; Pseudomonadota; Betaproteobacteria; Nitrosomonadales;
OC Nitrosomonadaceae; Nitrosospira.
OX NCBI_TaxID=1288494 {ECO:0000313|EMBL:ARO86742.1, ECO:0000313|Proteomes:UP000012179};
RN [1] {ECO:0000313|EMBL:ARO86742.1, ECO:0000313|Proteomes:UP000012179}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=APG3 {ECO:0000313|EMBL:ARO86742.1,
RC ECO:0000313|Proteomes:UP000012179};
RX PubMed=25336720; DOI=10.1099/ijs.0.070789-0;
RA Urakawa H., Garcia J.C., Nielsen J.L., Le V.Q., Kozlowski J.A., Stein L.Y.,
RA Lim C.K., Pommerening-Roser A., Martens-Habbena W., Stahl D.A., Klotz M.G.;
RT "Nitrosospira lacus sp. nov., a psychrotolerant, ammonia-oxidizing
RT bacterium from sandy lake sediment.";
RL Int. J. Syst. Evol. Microbiol. 65:242-250(2015).
CC -!- FUNCTION: Confers DNA tethering and processivity to DNA polymerases and
CC other proteins. Acts as a clamp, forming a ring around DNA (a reaction
CC catalyzed by the clamp-loading complex) which diffuses in an ATP-
CC independent manner freely and bidirectionally along dsDNA. Initially
CC characterized for its ability to contact the catalytic subunit of DNA
CC polymerase III (Pol III), a complex, multichain enzyme responsible for
CC most of the replicative synthesis in bacteria; Pol III exhibits 3'-5'
CC exonuclease proofreading activity. The beta chain is required for
CC initiation of replication as well as for processivity of DNA
CC replication. {ECO:0000256|PIRNR:PIRNR000804}.
CC -!- SUBUNIT: Forms a ring-shaped head-to-tail homodimer around DNA.
CC {ECO:0000256|PIRNR:PIRNR000804}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|ARBA:ARBA00004496,
CC ECO:0000256|PIRNR:PIRNR000804}.
CC -!- SIMILARITY: Belongs to the beta sliding clamp family.
CC {ECO:0000256|ARBA:ARBA00010752, ECO:0000256|PIRNR:PIRNR000804}.
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DR EMBL; CP021106; ARO86742.1; -; Genomic_DNA.
DR RefSeq; WP_004175641.1; NZ_CP021106.3.
DR AlphaFoldDB; A0A1W6SLS9; -.
DR KEGG; nlc:EBAPG3_002550; -.
DR eggNOG; COG0592; Bacteria.
DR OrthoDB; 8421503at2; -.
DR Proteomes; UP000012179; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0009360; C:DNA polymerase III complex; IEA:InterPro.
DR GO; GO:0008408; F:3'-5' exonuclease activity; IEA:InterPro.
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:0006260; P:DNA replication; IEA:UniProtKB-UniRule.
DR CDD; cd00140; beta_clamp; 1.
DR Gene3D; 3.70.10.10; -; 1.
DR Gene3D; 3.10.150.10; DNA Polymerase III, subunit A, domain 2; 1.
DR InterPro; IPR046938; DNA_clamp_sf.
DR InterPro; IPR001001; DNA_polIII_beta.
DR InterPro; IPR022635; DNA_polIII_beta_C.
DR InterPro; IPR022637; DNA_polIII_beta_cen.
DR InterPro; IPR022634; DNA_polIII_beta_N.
DR NCBIfam; TIGR00663; dnan; 1.
DR PANTHER; PTHR30478:SF0; BETA SLIDING CLAMP; 1.
DR PANTHER; PTHR30478; DNA POLYMERASE III SUBUNIT BETA; 1.
DR Pfam; PF00712; DNA_pol3_beta; 1.
DR Pfam; PF02767; DNA_pol3_beta_2; 1.
DR Pfam; PF02768; DNA_pol3_beta_3; 1.
DR PIRSF; PIRSF000804; DNA_pol_III_b; 1.
DR SMART; SM00480; POL3Bc; 1.
DR SUPFAM; SSF55979; DNA clamp; 3.
PE 3: Inferred from homology;
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|PIRNR:PIRNR000804};
KW DNA replication {ECO:0000256|ARBA:ARBA00022705,
KW ECO:0000256|PIRNR:PIRNR000804};
KW DNA-directed DNA polymerase {ECO:0000256|ARBA:ARBA00022932,
KW ECO:0000256|PIRNR:PIRNR000804};
KW Nucleotidyltransferase {ECO:0000256|ARBA:ARBA00022695,
KW ECO:0000256|PIRNR:PIRNR000804};
KW Reference proteome {ECO:0000313|Proteomes:UP000012179};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|PIRNR:PIRNR000804}.
FT DOMAIN 7..121
FT /note="DNA polymerase III beta sliding clamp N-terminal"
FT /evidence="ECO:0000259|Pfam:PF00712"
FT DOMAIN 132..246
FT /note="DNA polymerase III beta sliding clamp central"
FT /evidence="ECO:0000259|Pfam:PF02767"
FT DOMAIN 249..368
FT /note="DNA polymerase III beta sliding clamp C-terminal"
FT /evidence="ECO:0000259|Pfam:PF02768"
SQ SEQUENCE 369 AA; 41709 MW; FAA0D03D4BAB07B3 CRC64;
MKLIQADKDI LLKPLQTVTG IVERRHTLPI LSNVLIERKN DKISFIATDL EIQITTSAQD
GNTASEGHSV TVAAKKLQDI LRALPDKTEV TLETTDSRLQ GKAGKSRFSL QTLPVEDFPK
FPENTESQAK ITVKQKELKH LLFMVQYAMA QQDIRYYLNG LLLLMEESHL KAVATDGHRL
AFALLMLQVP QEKREVILPR KVVLELAKQL NDSDELVTVE ILQNQVRFTF SNVILISKVV
DGKFPDYNRV IPVDHQKQID VNRLLLLQTL QRASILSNEK FRGVRLILTT GNLRIVCNNA
EQEEAEEEVE VQYDGEALDI GFNVTYLLDV LNNLTNETVR CSFGDANSSA LITIPGNDDF
KYVVMPMRI
//
