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Database: UniProt
Entry: A0A2K8K4L9_9RHOB
LinkDB: A0A2K8K4L9_9RHOB
Original site: A0A2K8K4L9_9RHOB 
ID   A0A2K8K4L9_9RHOB        Unreviewed;       372 AA.
AC   A0A2K8K4L9;
DT   25-APR-2018, integrated into UniProtKB/TrEMBL.
DT   25-APR-2018, sequence version 1.
DT   24-JAN-2024, entry version 16.
DE   RecName: Full=Beta sliding clamp {ECO:0000256|ARBA:ARBA00021035, ECO:0000256|PIRNR:PIRNR000804};
GN   ORFNames=BG454_00010 {ECO:0000313|EMBL:ATX64412.1};
OS   Rhodobaca barguzinensis.
OC   Bacteria; Pseudomonadota; Alphaproteobacteria; Rhodobacterales;
OC   Paracoccaceae; Rhodobaca.
OX   NCBI_TaxID=441209 {ECO:0000313|EMBL:ATX64412.1, ECO:0000313|Proteomes:UP000228948};
RN   [1] {ECO:0000313|EMBL:ATX64412.1, ECO:0000313|Proteomes:UP000228948}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=alga05 {ECO:0000313|Proteomes:UP000228948};
RA   Kopejtka K., Tomasch J.M., Bunk B., Koblizek M.;
RT   "Revised Sequence and Annotation of the Rhodobaca barguzinensis strain
RT   alga05 Genome.";
RL   Submitted (NOV-2017) to the EMBL/GenBank/DDBJ databases.
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; CP024899; ATX64412.1; -; Genomic_DNA.
DR   RefSeq; WP_071479527.1; NZ_SODJ01000006.1.
DR   AlphaFoldDB; A0A2K8K4L9; -.
DR   STRING; 441209.GCA_001870665_00338; -.
DR   KEGG; rbg:BG454_00010; -.
DR   OrthoDB; 8421503at2; -.
DR   Proteomes; UP000228948; 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-binding {ECO:0000256|ARBA:ARBA00023125};
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:UP000228948};
KW   Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|PIRNR:PIRNR000804}.
FT   DOMAIN          1..120
FT                   /note="DNA polymerase III beta sliding clamp N-terminal"
FT                   /evidence="ECO:0000259|Pfam:PF00712"
FT   DOMAIN          132..249
FT                   /note="DNA polymerase III beta sliding clamp central"
FT                   /evidence="ECO:0000259|Pfam:PF02767"
FT   DOMAIN          252..371
FT                   /note="DNA polymerase III beta sliding clamp C-terminal"
FT                   /evidence="ECO:0000259|Pfam:PF02768"
SQ   SEQUENCE   372 AA;  40620 MW;  0F3BF93C4B6762B6 CRC64;
     MKISIERAVL LKAVAQAQSV VERRNTIPIL ANVLIEASEG SVTLRATDLD IEVLDRAPAM
     VEQAGATTVS AVLLHDIIRK LPDGALIELV DDTRTGRLQV SAGRSNFSLA TLPKEDFPVM
     ASSEYSANFA APAKVLRRLF DKAKFAISTE ETRYYLNGVY MHVADGESGR VLRCVATDGH
     RLARVDAPLP EGAENMPGVI VPRKTVGELR KLLDDDDMEI AVSVSETKVR FATPDMTLTS
     KVIDGTFPDY SRVIPTQNTK RLEVDASEFS KAVDRVATVS SERSRAVKLA LEDDKLVLSV
     NAPDSGAAEE ELIVAYGDER LEIGFNAKYL LEIASQVDRE NAVFMFNTSG DPTLMREGND
     TSAVYVVMPM RV
//
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