ID A0A317CFH5_9GAMM Unreviewed; 370 AA.
AC A0A317CFH5;
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|ARBA:ARBA00021035, ECO:0000256|PIRNR:PIRNR000804};
GN ORFNames=DKT75_07305 {ECO:0000313|EMBL:PWQ97338.1};
OS Leucothrix arctica.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Thiotrichales;
OC Thiotrichaceae; Leucothrix.
OX NCBI_TaxID=1481894 {ECO:0000313|EMBL:PWQ97338.1, ECO:0000313|Proteomes:UP000245506};
RN [1] {ECO:0000313|EMBL:PWQ97338.1, ECO:0000313|Proteomes:UP000245506}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=IMCC9719 {ECO:0000313|EMBL:PWQ97338.1,
RC ECO:0000313|Proteomes:UP000245506};
RA Choi A., Baek K.;
RT "Leucothrix arctica sp. nov., isolated from Arctic 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}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:PWQ97338.1}.
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DR EMBL; QGKL01000021; PWQ97338.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A317CFH5; -.
DR OrthoDB; 8421503at2; -.
DR Proteomes; UP000245506; Unassembled WGS sequence.
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:UP000245506};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|PIRNR:PIRNR000804}.
FT DOMAIN 1..121
FT /note="DNA polymerase III beta sliding clamp N-terminal"
FT /evidence="ECO:0000259|Pfam:PF00712"
FT DOMAIN 133..247
FT /note="DNA polymerase III beta sliding clamp central"
FT /evidence="ECO:0000259|Pfam:PF02767"
FT DOMAIN 251..369
FT /note="DNA polymerase III beta sliding clamp C-terminal"
FT /evidence="ECO:0000259|Pfam:PF02768"
SQ SEQUENCE 370 AA; 41411 MW; 80D9EF8847453E50 CRC64;
MKFTVARDTL VELLANVVGA VEKKHTSKIL ENVLLSVYKD QLRLVGTDLE IELSASVNIQ
VDREGAITAP ARKLLDITKA LPSDSFIQVE QDEENSRLLI KGGRSRFELA TLPAEDFPEL
DEIPLEHELV LVESQFKRLL DKTSFCMANQ DVRYYLNGLL LDITSGTINT VSTDGHRLAL
CEFKDDAISV DERSSIIVPR KGALELSRIL EASADVNVRV QMSNNHIRVE KDNVRFTSKL
IDGKYPDYQA AVPSNSSFSI QLDRMVFRDT LSRVAILSNE KFRGIRLRLS DGLMMLMSNN
PEQESAEEEI DINYSGDVFE IGFNVSYVLE AVNHLEGEMI DFSFTSSAAS ALLSSPEDEG
VRYVVMPVRL
//
