ID A0A2T1CVL3_9CYAN Unreviewed; 403 AA.
AC A0A2T1CVL3;
DT 18-JUL-2018, integrated into UniProtKB/TrEMBL.
DT 18-JUL-2018, sequence version 1.
DT 27-MAR-2024, entry version 15.
DE RecName: Full=Beta sliding clamp {ECO:0000256|PIRNR:PIRNR000804};
GN ORFNames=C7B62_02485 {ECO:0000313|EMBL:PSB12303.1};
OS Pleurocapsa sp. CCALA 161.
OC Bacteria; Cyanobacteriota; Cyanophyceae; Pleurocapsales; Hyellaceae;
OC Pleurocapsa.
OX NCBI_TaxID=2107688 {ECO:0000313|EMBL:PSB12303.1, ECO:0000313|Proteomes:UP000239836};
RN [1] {ECO:0000313|EMBL:PSB12303.1, ECO:0000313|Proteomes:UP000239836}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CCALA 161 {ECO:0000313|EMBL:PSB12303.1,
RC ECO:0000313|Proteomes:UP000239836};
RA Cohen D.B., Kent A.D.;
RL Submitted (FEB-2018) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:PSB12303.1, ECO:0000313|Proteomes:UP000239836}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CCALA 161 {ECO:0000313|EMBL:PSB12303.1,
RC ECO:0000313|Proteomes:UP000239836};
RA Moore K.R., Magnabosco C., Momper L., Gold D.A., Bosak T., Fournier G.P.;
RT "The ancient ancestry and fast evolution of plastids.";
RL Submitted (MAR-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:PSB12303.1}.
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DR EMBL; PVWF01000005; PSB12303.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A2T1CVL3; -.
DR InParanoid; A0A2T1CVL3; -.
DR OrthoDB; 8421503at2; -.
DR Proteomes; UP000239836; 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:UP000239836};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|PIRNR:PIRNR000804}.
FT DOMAIN 1..138
FT /note="DNA polymerase III beta sliding clamp N-terminal"
FT /evidence="ECO:0000259|Pfam:PF00712"
FT DOMAIN 155..276
FT /note="DNA polymerase III beta sliding clamp central"
FT /evidence="ECO:0000259|Pfam:PF02767"
FT DOMAIN 280..399
FT /note="DNA polymerase III beta sliding clamp C-terminal"
FT /evidence="ECO:0000259|Pfam:PF02768"
SQ SEQUENCE 403 AA; 43738 MW; 348B1A9D8D1019A1 CRC64;
MKIICASFDL KDHLSLVSRA VPSRPEPAVL GNVLIQASQS SQKVSLTAFD GSLGIKTSFN
AEVDTGGSIT LPARLLNDIV TRLPEIEITL EVPESELEEA RSGVARTEQE ANFVTTISST
SGQFQLTGID ATEFPELPTI DPESQKIELP IAILNQGLRG CLFAASTELS KQILTGVHLK
TQDVGKGGGD ILEFAATDSH RLAVVATNLN DLASESTIEL PQLAVTIPAK ALRELERIVS
NAAENDMVKV NFDEQVMVFE YGDRLLTSTK ISGDYPAYGQ LIPQKFSREI ILDRKRLISS
LELVAVLAQK NNLVKFSLHN DNSELVVSAD AQDVGNAEQS LPAEIIGDDI EIAFNIKYLM
DGLKAIPTTE IKMQLNEGHQ PVIFSPLGGL TMTYLVMPVQ LRN
//
