ID A0A1G9YVH8_9FIRM Unreviewed; 371 AA.
AC A0A1G9YVH8;
DT 22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT 22-NOV-2017, sequence version 1.
DT 27-MAR-2024, entry version 16.
DE RecName: Full=Beta sliding clamp {ECO:0000256|ARBA:ARBA00021035, ECO:0000256|PIRNR:PIRNR000804};
GN ORFNames=SAMN05660299_02150 {ECO:0000313|EMBL:SDN12363.1};
OS Megasphaera paucivorans.
OC Bacteria; Bacillota; Negativicutes; Veillonellales; Veillonellaceae;
OC Megasphaera.
OX NCBI_TaxID=349095 {ECO:0000313|EMBL:SDN12363.1, ECO:0000313|Proteomes:UP000199309};
RN [1] {ECO:0000313|EMBL:SDN12363.1, ECO:0000313|Proteomes:UP000199309}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 16981 {ECO:0000313|EMBL:SDN12363.1,
RC ECO:0000313|Proteomes:UP000199309};
RA de Groot N.N.;
RL Submitted (OCT-2016) 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|ARBA:ARBA00002266,
CC 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; FNHQ01000025; SDN12363.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1G9YVH8; -.
DR STRING; 349095.SAMN05660299_02150; -.
DR OrthoDB; 8421503at2; -.
DR Proteomes; UP000199309; 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:UP000199309};
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 136..247
FT /note="DNA polymerase III beta sliding clamp central"
FT /evidence="ECO:0000259|Pfam:PF02767"
FT DOMAIN 249..369
FT /note="DNA polymerase III beta sliding clamp C-terminal"
FT /evidence="ECO:0000259|Pfam:PF02768"
SQ SEQUENCE 371 AA; 42076 MW; 2E0043FAF8B4B64E CRC64;
MKLKFKKEDL TKGLQTVQKV AQNKSNNISY ENGLLIKALK DVIEIQANDY DMGIKVIVPG
IIEEPGEVFI SNPFLIELTR RLPSDEIEMK KQDADTKLTV LGGKSKFECL TMNPDDFNEV
TLIDSGYSNF STDSITLKNL IDNTSYACST DDARPIFMGT LMEVNESTLT MVATDTHRLA
LKKVILEQSI EQPIKAIIPS RLLAEISRQM PTDMPQVVEI TAIRNNIAFK FSNVYIKTRL
IEGEFPNYRR VIPSEFSCKV MVERNEFTGS VERTSIIAKD SQYDVINFIF EDNQIKLTSQ
HPDYGTVEDY VACSMEGEQL NISFNGKFIL DILKHCKSNE IILKSKANSP MLVQEKGEDS
YIYVVTPMRT R
//
