May play an essential role at the early stage of chromosomal DNA replication by coupling the polymerase alpha/primase complex to the cellular replication machinery. Homo sapiens (taxid: 9606)
>sp|Q58D13|DPOA2_BOVIN DNA polymerase alpha subunit B OS=Bos taurus GN=POLA2 PE=2 SV=1
Score = 106 bits (265), Expect = 4e-23, Method: Compositional matrix adjust.
Identities = 51/109 (46%), Positives = 71/109 (65%), Gaps = 3/109 (2%)
Query: 3 SLNKLLSEDSDSK---PRPWVLDISGVVVGVTSVDVLMHLGREEFAAAPEMTDRLSRLAS 59
S + LL ED P L I+GV+ G+TS D+L H+G EE +++ +DR SR+
Sbjct: 443 SCSDLLREDKKRVRLVSEPCTLSINGVIFGLTSTDLLFHMGAEEISSSSGTSDRFSRILR 502
Query: 60 HLLQQQCYYPLIPPNVELPVDMECWELHAQLPVTPHIMILPSDLRYFVK 108
H+L Q+ YYPL PP ++ +D E + L+AQLPVTP + I PS+LRYFVK
Sbjct: 503 HILTQRSYYPLYPPQEDMAIDYENFYLYAQLPVTPDVFIAPSELRYFVK 551
May play an essential role at the early stage of chromosomal DNA replication by coupling the polymerase alpha/primase complex to the cellular replication machinery.
Bos taurus (taxid: 9913)
>sp|O89043|DPOA2_RAT DNA polymerase alpha subunit B OS=Rattus norvegicus GN=Pola2 PE=2 SV=2
May play an essential role at the early stage of chromosomal DNA replication by coupling the polymerase alpha/primase complex to the cellular replication machinery.
Rattus norvegicus (taxid: 10116)
>sp|P33611|DPOA2_MOUSE DNA polymerase alpha subunit B OS=Mus musculus GN=Pola2 PE=1 SV=2
May play an essential role at the early stage of chromosomal DNA replication by coupling the polymerase alpha/primase complex to the cellular replication machinery.
Mus musculus (taxid: 10090)
>sp|O74946|DPOA2_SCHPO DNA polymerase alpha subunit B OS=Schizosaccharomyces pombe (strain 972 / ATCC 24843) GN=pol12 PE=1 SV=1
Score = 73.9 bits (180), Expect = 2e-13, Method: Compositional matrix adjust.
Identities = 40/98 (40%), Positives = 55/98 (56%), Gaps = 5/98 (5%)
Query: 16 PRPWVLDISGVVVGVTSVDVLMHLGREEFAAAPEMTDRLSRLASHLLQQQCYYPLIPPNV 75
P P + I+ VV GV++ D+L+H REE P + +RL SH+L Q+ +YPL P
Sbjct: 421 PNPCMFSINDVVFGVSTNDILLHTSREELFRLPSHGNLFARLVSHVLHQRHFYPLFPGGS 480
Query: 76 -----ELPVDMECWELHAQLPVTPHIMILPSDLRYFVK 108
+D+ +L L P I+ILPSDLRYFVK
Sbjct: 481 LEKCNPSNLDIAHLKLGEFLNTMPDILILPSDLRYFVK 518
May play an essential role at the early stage of chromosomal DNA replication by coupling the polymerase alpha/primase complex to the cellular replication machinery.
May play an essential role at the early stage of chromosomal DNA replication by coupling the polymerase alpha/primase complex to the cellular replication machinery.
Drosophila melanogaster (taxid: 7227)
>sp|Q21625|DPOA2_CAEEL DNA polymerase alpha subunit B OS=Caenorhabditis elegans GN=div-1 PE=3 SV=3
Score = 59.7 bits (143), Expect = 5e-09, Method: Composition-based stats.
Identities = 37/88 (42%), Positives = 49/88 (55%), Gaps = 4/88 (4%)
Query: 18 PWVLDISGVVVGVTSVDVLMHLGREEF--AAAPEMTDRLSRLASHLLQQQCYYPLIPPNV 75
P + ISGV V +TS + + L EF +A E DR++RL+SHLL QQC YPL P
Sbjct: 441 PCIFRISGVEVAMTSSEPIQALSNTEFHRSANQENIDRVARLSSHLLTQQCMYPLEP--T 498
Query: 76 ELPVDMECWELHAQLPVTPHIMILPSDL 103
E+P M + TPHI+ P+ L
Sbjct: 499 EVPASMGDLLDVCCIGSTPHIVFAPTKL 526
May play an essential role at the early stage of chromosomal DNA replication by coupling the polymerase alpha/primase complex to the cellular replication machinery.
Caenorhabditis elegans (taxid: 6239)
Close Homologs in the Non-Redundant Database Detected by BLAST
Score = 72.7 bits (179), Expect = 2e-17
Identities = 27/92 (29%), Positives = 39/92 (42%), Gaps = 5/92 (5%)
Query: 18 PWVLDISGVVVGVTSVDVLMHLGREEFAAAPEMTDRLSRLASHLLQQQCYYPLIPPNVEL 77
P I+GV + VTS D + L R +RL RL +L+Q+ YPL P+
Sbjct: 102 PCRFSINGVEIVVTSGDNVKDLLRYSLKF-SSSEERLLRLVETILRQRHLYPL-APDTLG 159
Query: 78 PVDMECWELHA-QLPVTPHIMILPSDLRYFVK 108
P + + L P + I+ L FV
Sbjct: 160 PYPYD--KDDPFVLDPLPDVFIVGDKLPPFVT 189
This family contains a number of DNA polymerase subunits. The B subunit of the DNA polymerase alpha plays an essential role at the initial stage of DNA replication in S. cerevisiae and is phosphorylated in a cell cycle-dependent manner. DNA polymerase epsilon is essential for cell viability and chromosomal DNA replication in budding yeast. In addition, DNA polymerase epsilon may be involved in DNA repair and cell-cycle checkpoint control. The enzyme consists of at least four subunits in mammalian cells as well as in yeast. The largest subunit of DNA polymerase epsilon is responsible for polymerase epsilon is responsible for polymerase activity. In mouse, the DNA polymerase epsilon subunit B is the second largest subunit of the DNA polymerase. A part of the N-terminal was found to be responsible for the interaction with SAP18. Experimental evidence suggests that this subunit may recruit histone deacetylase to the replication fork to modify the chromatin structure. Length = 189
>gnl|CDD|227539 COG5214, POL12, DNA polymerase alpha-primase complex, polymerase-associated subunit B [DNA replication, recombination, and repair]
>PF04042 DNA_pol_E_B: DNA polymerase alpha/epsilon subunit B; InterPro: IPR007185 DNA polymerase epsilon is essential for cell viability and chromosomal DNA replication in budding yeast
In addition, DNA polymerase epsilon may be involved in DNA repair and cell-cycle checkpoint control. The enzyme consists of at least four subunits in mammalian cells as well as in yeast. The largest subunit of DNA polymerase epsilon is responsible for polymerase activity. In mouse, the DNA polymerase epsilon subunit B is the second largest subunit of the DNA polymerase. A part of the N-terminal was found to be responsible for the interaction with SAP18. Experimental evidence suggests that this subunit may recruit histone deacetylase to the replication fork to modify the chromatin structure [].; GO: 0003677 DNA binding, 0003887 DNA-directed DNA polymerase activity, 0006260 DNA replication; PDB: 3E0J_C 3FLO_G.
>cd07386 MPP_DNA_pol_II_small_archeal_C archeal DNA polymerase II, small subunit, C-terminal metallophosphatase domain
The small subunit of the archeal DNA polymerase II contains a C-terminal metallophosphatase domain. This domain is thought to be functionally active because the active site residues required for phosphoesterase activity in other members of this superfamily are intact. The archeal replicative DNA polymerases are thought to possess intrinsic phosphatase activity that hydrolyzes the pyrophosphate released during nucleotide polymerization. This domain belongs to the metallophosphatase (MPP) superfamily. MPPs are functionally diverse, but all share a conserved domain with an active site consisting of two metal ions (usually manganese, iron, or zinc) coordinated with octahedral geometry by a cage of histidine, aspartate, and asparagine residues. The MPP superfamily includes: Mre11/SbcD-like exonucleases, Dbr1-like RNA lariat debranching enzymes, YfcE-like phosphodiestera
>PTZ00235 DNA polymerase epsilon subunit B; Provisional
PolD2 (DNA polymerase delta, subunit 2) is an auxiliary subunit of the eukaryotic DNA polymerase delta (PolD) complex thought to play a regulatory role and to serve as a scaffold for PolD assembly by interacting simultaneously with all of the other three subunits. PolD2 is catalytically inactive and lacks the active site residues required for phosphoesterase activity in other members of this superfamily. PolD2 is also involved in the recruitment of several proteins regulating DNA metabolism, including p21, PDIP1, PDIP38, PDIP46, and WRN. Human PolD consists of four subunits: p125 (PolD1), p50 (PolD2), p66(PolD3), and p12(PolD4). PolD is one of three major replicases in eukaryotes. PolD also plays an essential role in translesion DNA synthesis, homologous recombination, and DNA repair. Within the PolD complex, PolD2 tightly associates with PolD3. PolD2 belongs to the metallophosphatase (MPP) superfamily