ID A0A3N4RJP3_9ACTN Unreviewed; 376 AA.
AC A0A3N4RJP3; A0A8G1XEX9;
DT 13-FEB-2019, integrated into UniProtKB/TrEMBL.
DT 13-FEB-2019, sequence version 1.
DT 27-MAR-2024, entry version 24.
DE RecName: Full=Beta sliding clamp {ECO:0000256|PIRNR:PIRNR000804};
GN ORFNames=EDD38_1886 {ECO:0000313|EMBL:RPE33593.1}, EDD39_1366
GN {ECO:0000313|EMBL:ROR43222.1};
OS Kitasatospora cineracea.
OC Bacteria; Actinomycetota; Actinomycetes; Kitasatosporales;
OC Streptomycetaceae; Kitasatospora.
OX NCBI_TaxID=88074 {ECO:0000313|EMBL:RPE33593.1, ECO:0000313|Proteomes:UP000266906};
RN [1] {ECO:0000313|Proteomes:UP000266906, ECO:0000313|Proteomes:UP000267408}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 44780 {ECO:0000313|EMBL:ROR43222.1,
RC ECO:0000313|Proteomes:UP000267408}, and DSM 44781
RC {ECO:0000313|EMBL:RPE33593.1, ECO:0000313|Proteomes:UP000266906};
RA Klenk H.-P.;
RT "Sequencing the genomes of 1000 actinobacteria strains.";
RL Submitted (NOV-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:RPE33593.1}.
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DR EMBL; RJVJ01000001; ROR43222.1; -; Genomic_DNA.
DR EMBL; RKQG01000001; RPE33593.1; -; Genomic_DNA.
DR RefSeq; WP_030457640.1; NZ_RKQG01000001.1.
DR AlphaFoldDB; A0A3N4RJP3; -.
DR Proteomes; UP000266906; Unassembled WGS sequence.
DR Proteomes; UP000267408; 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-directed DNA polymerase {ECO:0000256|ARBA:ARBA00022932,
KW ECO:0000256|PIRNR:PIRNR000804};
KW Nucleotidyltransferase {ECO:0000256|ARBA:ARBA00022695,
KW ECO:0000256|PIRNR:PIRNR000804};
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..363
FT /note="DNA polymerase III beta sliding clamp C-terminal"
FT /evidence="ECO:0000259|Pfam:PF02768"
SQ SEQUENCE 376 AA; 39838 MW; FB737B6F6C47425F CRC64;
MKFRVERDVL AEAVAWAARS LPARPPVPVL AGLLLTAQEG TLALSGFDYE VSARVELEAD
VEEAGTVLVS GRLLNDISRN LPNRPVEIST DGARVSVVCG TSRFTLPTLP VDEYPALPQM
PTATGTVPGD VFASAVSQAA VAAGRDDTLP VLTGVRVEIN GSGITLAATD RYRFAVRELL
WKPEQDDINA VALVPAKTLQ DIAKSLGSGD QVTIALSTGG AGEGLIGFEG AGRRTTTRLL
EGEFPKFRSI FPTEFSAVAA VQTQPFLEAL KRVSLVAERN TPVRLNFEQG VLTLEAGSGD
DAQATERIDA DLEGDDISIA FNPGYLEEGL KAIDAGYAQL SFTTPTKPAL LTGKPAVDAE
PDEAYQYLIM PVRLSG
//
