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Database: UniProt
Entry: A0A1H9CCU6_9ACTN
LinkDB: A0A1H9CCU6_9ACTN
Original site: A0A1H9CCU6_9ACTN 
ID   A0A1H9CCU6_9ACTN        Unreviewed;       376 AA.
AC   A0A1H9CCU6;
DT   22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT   22-NOV-2017, sequence version 1.
DT   24-JAN-2024, entry version 23.
DE   RecName: Full=Beta sliding clamp {ECO:0000256|PIRNR:PIRNR000804};
GN   ORFNames=SAMN05216481_103170 {ECO:0000313|EMBL:SEP99006.1};
OS   Streptomyces radiopugnans.
OC   Bacteria; Actinomycetota; Actinomycetes; Kitasatosporales;
OC   Streptomycetaceae; Streptomyces.
OX   NCBI_TaxID=403935 {ECO:0000313|EMBL:SEP99006.1, ECO:0000313|Proteomes:UP000199055};
RN   [1] {ECO:0000313|EMBL:SEP99006.1, ECO:0000313|Proteomes:UP000199055}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CGMCC 4.3519 {ECO:0000313|EMBL:SEP99006.1,
RC   ECO:0000313|Proteomes:UP000199055};
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|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; FOET01000003; SEP99006.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0A1H9CCU6; -.
DR   STRING; 403935.SAMN05216481_103170; -.
DR   Proteomes; UP000199055; 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; 3.10.150.10; DNA Polymerase III, subunit A, domain 2; 3.
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:UP000199055};
KW   Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|PIRNR:PIRNR000804}.
FT   DOMAIN          1..118
FT                   /note="DNA polymerase III beta sliding clamp N-terminal"
FT                   /evidence="ECO:0000259|Pfam:PF00712"
FT   DOMAIN          127..246
FT                   /note="DNA polymerase III beta sliding clamp central"
FT                   /evidence="ECO:0000259|Pfam:PF02767"
FT   DOMAIN          248..372
FT                   /note="DNA polymerase III beta sliding clamp C-terminal"
FT                   /evidence="ECO:0000259|Pfam:PF02768"
SQ   SEQUENCE   376 AA;  39691 MW;  986230713651364A CRC64;
     MKIRVERDVL AEAVAWAARS LPARPPVPVL AGLLLKAEEG SLSLSGFDYE VSARVSVEAD
     VEEDGTVLVS GRLLADISRA LPNRPVEIST DGVRVSVVCG SSRFTLHTLP VEEYPALPQM
     PSATGTVPGE VFAAAAAQVA IAAGRDDTLP VLTGVRIEIE GDTVTLASTD RYRFAVREFL
     WKPETPDASA VALVPAKTLL DTAKSLSGGD NVTLALSGSG AGEGLIGFEG NGRRTTTRLL
     EGDLPKYRTL FPTEFNSVAV IETAPFVEAV KRVSLVAERN TPVRLTFEQG VLILEAGSSD
     DAQAVERVDA QLEGDDISIA FNPGFLLEGL SAIDAPVAQL SFTTSTKPAL LSGKPAMDAE
     ADEAYKYLIM PVRLSG
//
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