ID A0A1D8AT51_9BACT Unreviewed; 374 AA.
AC A0A1D8AT51;
DT 18-JAN-2017, integrated into UniProtKB/TrEMBL.
DT 18-JAN-2017, sequence version 1.
DT 24-JAN-2024, entry version 22.
DE RecName: Full=Beta sliding clamp {ECO:0000256|PIRNR:PIRNR000804};
GN Name=dnaN {ECO:0000313|EMBL:AOS44088.1};
GN ORFNames=Verru16b_01149 {ECO:0000313|EMBL:AOS44088.1};
OS Lacunisphaera limnophila.
OC Bacteria; Verrucomicrobiota; Opitutae; Opitutales; Opitutaceae;
OC Lacunisphaera.
OX NCBI_TaxID=1838286 {ECO:0000313|EMBL:AOS44088.1, ECO:0000313|Proteomes:UP000095228};
RN [1] {ECO:0000313|EMBL:AOS44088.1, ECO:0000313|Proteomes:UP000095228}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=IG16b {ECO:0000313|EMBL:AOS44088.1,
RC ECO:0000313|Proteomes:UP000095228};
RA Rast P., Gloeckner I., Jogler M., Boedeker C., Jeske O., Wiegand S.,
RA Reinhardt R., Schumann P., Rohde M., Spring S., Gloeckner F.O., Jogler C.;
RT "Three novel species with peptidoglycan cell walls form the new genus
RT Lacunisphaera gen. nov. in the family Opitutaceae of the verrucomicrobial
RT subdivision 4.";
RL Submitted (JUN-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; CP016094; AOS44088.1; -; Genomic_DNA.
DR RefSeq; WP_069961380.1; NZ_CP016094.1.
DR AlphaFoldDB; A0A1D8AT51; -.
DR STRING; 1838286.Verru16b_01149; -.
DR KEGG; obg:Verru16b_01149; -.
DR PATRIC; fig|1838286.3.peg.1155; -.
DR OrthoDB; 8421503at2; -.
DR Proteomes; UP000095228; Chromosome.
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-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:UP000095228};
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 129..252
FT /note="DNA polymerase III beta sliding clamp central"
FT /evidence="ECO:0000259|Pfam:PF02767"
FT DOMAIN 255..372
FT /note="DNA polymerase III beta sliding clamp C-terminal"
FT /evidence="ECO:0000259|Pfam:PF02768"
SQ SEQUENCE 374 AA; 40882 MW; 3B8B2558895900DE CRC64;
MKFKINRDHF SNGLAQVLNV VGSKAAMPIL SNVLIEAEKD HISLTTTNLD LGIRCRIKAE
VKEGGSITLP VKRLATIVRE LPNVDVSFDS TPNHQAKIAS GGSNFRIMGI GAEEFPKLPD
SNDDKSHTLD QGELATMLGN VAYAQSTDET RYILNGVYFS FKDGKLALVA TDGRRLALVS
KDLAVPAAAS GAIILPAKTV AELLRLLGKG EKLTIAFNER RAAFQIETGK EAGGLTDSIF
LFSKVVEGNY PNYQQVIPKE THQRIKLERE LFLQCVHRAA LVTSEKSNSV KIKVTSNLLE
ITASSPDFGE AHESMAISYS GPDLQVAFNP QFVMDPLRAL TKDEVFFELK DEVSPGVFKT
LESFVCVIMP VRLS
//