ID A0A2Z4GEG2_9BACT Unreviewed; 374 AA.
AC A0A2Z4GEG2;
DT 10-OCT-2018, integrated into UniProtKB/TrEMBL.
DT 10-OCT-2018, sequence version 1.
DT 27-MAR-2024, entry version 15.
DE RecName: Full=Beta sliding clamp {ECO:0000256|PIRNR:PIRNR000804};
GN Name=dnaN {ECO:0000313|EMBL:AWV99709.1};
GN ORFNames=DJ013_16630 {ECO:0000313|EMBL:AWV99709.1};
OS Arcticibacterium luteifluviistationis.
OC Bacteria; Bacteroidota; Cytophagia; Cytophagales; Spirosomataceae;
OC Arcticibacterium.
OX NCBI_TaxID=1784714 {ECO:0000313|EMBL:AWV99709.1, ECO:0000313|Proteomes:UP000249873};
RN [1] {ECO:0000313|EMBL:AWV99709.1, ECO:0000313|Proteomes:UP000249873}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SM1504 {ECO:0000313|EMBL:AWV99709.1,
RC ECO:0000313|Proteomes:UP000249873};
RA Li Y., Qin Q.-L.;
RT "Complete genome sequence of Arcticibacterium luteifluviistationis SM1504T,
RT a cytophagaceae bacterium isolated from Arctic surface seawater.";
RL Submitted (MAY-2018) 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; CP029480; AWV99709.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A2Z4GEG2; -.
DR KEGG; als:DJ013_16630; -.
DR OrthoDB; 8421503at2; -.
DR Proteomes; UP000249873; 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:UP000249873};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|PIRNR:PIRNR000804}.
FT DOMAIN 1..119
FT /note="DNA polymerase III beta sliding clamp N-terminal"
FT /evidence="ECO:0000259|Pfam:PF00712"
FT DOMAIN 130..243
FT /note="DNA polymerase III beta sliding clamp central"
FT /evidence="ECO:0000259|Pfam:PF02767"
FT DOMAIN 246..367
FT /note="DNA polymerase III beta sliding clamp C-terminal"
FT /evidence="ECO:0000259|Pfam:PF02768"
SQ SEQUENCE 374 AA; 41589 MW; 04D20B019C68F2D9 CRC64;
MKFVVSSSEL LKHLATISGV IASNPIVPIL ENFLLELDET NLTITASDMQ TVMMTEAQVE
SSDKGSIAVP AKLLMETLRS LPEQPVTVNI DEDSFGVELV TSNGRFKLAG ENPMDFPHAP
EVNKNFSIEL DSNVLGAAIA NTIFATSTDD LRPAMTGVFV QVETDHTTFV ATDGHRLVRY
RREDVKSENS TSMILPRKAL MLLKSSLPSG DVPVKAEFSN SNAFFSFGNI KMICRLIDER
YPDYENVIPQ NNPNHMKIGR AELLSTLKRI SIYSNKTTHQ IRLKVTGNEL EISAEDLDYS
NEANEKLVCE YTGEDIEIGF NAKFLVEMLS NLNTDNLTLE MSQPNRAGLI VPEDKEENED
MLLLVMPVML NSYS
//
