SGID Silkworm Genome Informatics Database
Gene
KWMTBOMO09200  Validated by peptides from experiments
Pre Gene Modal
BGIBMGA003396
Annotation
PREDICTED:_DNA_polymerase_alpha_catalytic_subunit_isoform_X2_[Bombyx_mori]
Full name
DNA polymerase       + More
DNA polymerase alpha catalytic subunit      
Alternative Name
DNA polymerase alpha catalytic subunit p180
Location in the cell
Nuclear   Reliability : 4.283
 

Sequence

CDS
ATGGCCGATTCAATAGCTGCTCAGCGTGCGAAGCGACAAAAAACAGACCGACACGGTCGATTCTCGGCGTTTGAGAAGCTAAAACAATTAAAAGGGAAAGGTGTAAAGCATAAGTACGATGTGGATGTGCTTGAGAATGTGTACGACACTGTTGACGAGAAAGAATACACAGAAAGAGTTCTACAGCGACAAGAAGACGATTGGATAGAAGATGATGGTACTGGCTATGTTGAAGATGGAAGGGAGATATTTGATGATGATGATGATGCTTATGAAGCAACAAATAGTAAAGATACAGGCAGAGGACAGAAAAGGAAGGCCAAAGTTGCAGCACAGTCCTCAGGAAAAGGGAATATACGAAACTTAATTGGTAACATGCCTAGTAAGAAAAAAGAGGATGTAAAGATTTCAGAAGATAATATTTTATCTGATATTATATCTGATTTGGATGCTAACACTGCATCAAATGTAGTAAAATCTACACTGCCTATAACTAAAACTAACATTGTGGATACAAGTAAGAGAGATGCACAAAACTACTTCAAAAGTCTTTCTGCTAACGTCAAGAAACCTTCTGTACTAAAAACATTCAAGGAAGAAAAGGAGACTGAAAGTATTGAGCCAGACACATCTGCAGTACAGTGTGAAAAAAATATGATAAATCATGTGGTAAATGAACCTGCAAATAAGAAAATCAAGAAACCAGAATGGAACATTGAAAAAGAAATCAAGCAAGAACTTAATGAAACGCTTACTCCTAATATAGAAGAATTTGAAACACAAGATATTGACTTTGACGATGACTTCAGCAATGATGCAAAAACGTCCCAAGTGAAAAACGAGCCTGTCAGCACCGGAACTATCACCGAAAATCCTACAACAGACATCACTGATGAATTTTTCAATGACGAATTTGAAATATTCCCTTTACCAAAGAAAGAAACTACGAAAGAACTGAAACCATTGACTAGTACATGGCCAGAACAAGGAGGTGACAACCAAACTGTGTCTTCAGTTCAAAGTGATGGTCAATTACCACTGCAAACCAATGAAACAGGGGAGAAAGTGCTTAGATTTTACTGGCTTGATGCATGGGAAGATCGGTTTGTAAAACCAGGCGTTATATACCTATTTGGAAAAGTTTATGTTGACCCATCAAAAAAGAAGGCTGGATGTGTATCATGCTGCCTTGTTGTGAAGAATGTTAATAGGCAGATATTCCTGTTGCCAAGAGAATATAAACTTGACCCAATAACCCTTGAGCCAACAGAACAAGAGGTGACGATGATGGATATGTATGAAGAGTTCAATAGTTCTGTGGCAAGTGAACTCAGTCTCCAAGAATTTAAATCACGAAAGGTCACCAAGAACTACTGTTTCAATTTGCCAGATATACCAGCTCAATCTGATTATTTAGAAGTTAGATACTCGGCAACTCTCCCTCCGCCTCCTACCAACAAAAAATATTTGACATTCTCACATATATTCGGAACGAACACATCTTCACTAGAAATATTCCTACTAGAGAGGAAAATCAAAGGGCCCTGTTGGCTTGAGATCAAGAACCCGGAAAGCGTCCAAGCCAAAGTGTCTTGGTGTAAATTGGAAGCCTCGTGTGAGAAGATGGAACATGTTAATGTTGTCCGAACGGACGGTGACTTAGAACCACCTCCGATAGTCACAGCTGCTATAAACATGCGCACAACTATGGATCCGAAAACGCGAAAAACAAAGATTGTGATGTTGAGTTGCTTGACTCACAGCAGTTTCCCGATACACAAGTCGCCTCCGAATCCACCGTTTCAGCAGCATTTTAGCATAATAACAAAATGTAACGAAATATGGCCATTGGATCTAAAACAGGCTCTACCGCAATATAAAGCGACGAAATTAACCAAATGCGATACAGAGAGAGAACTCCTCAATTATTTCATGGTGCAGTTTTGGAAACTTGACCCGGACTTGGTGGTCGGTCACGACCTGCAAGGTTTCCAACAGGACCTGCTCATAGGGAACGTACTGGACCTCAACATACCGAACTGGTCGCGGCTGGGCCGTCTGAAGAGATCTGTCGCTCCGCAGAGGAAATTCGCAGCGAAAGACGCGTTCTTGGGCCGTTTAGTTTGCGATGTAAAGATATCCGCAATGGAACTTATCAGGGCCCGGAGTTTCGATCTCGAAACCCTTTGCACTAATGTATTGAAAATGAAAGAGGGCGAGCGTATCGATGTGGCACTCGAGGATTTACCGAAGTACTATGAAAACAGTAGGGATTTATTCCAGCTCGTGTCGCTCAGTATGCAGGACGCGTCGTACGTGCTGAGGATAATGTGCGAGCTCAACGCTATACCTCTGGCTCTTCAGATCACGCAGATAGCGGGCAACGTCATGTCTCGAACCCTACTCGGCGGCAGATCTGAACGCAACGAGTTCTTATTGCTCCACGCCTTCACTGAGAAAAATTATATAGTACCTGATAAGATTTATGGCAAGAAGACAACTGCTGAAGACGGAATTCAAGAAGACCAAGAAGAAGGTGCAAACGCTCCCAAGAAACAAGGAAAGAAAAAGGCGGCCTATTCCGGAGGTCTGGTACTAGATCCAAAAAAAGGCTTCTACGATAAACTAATTCTACTCATGGACTTCAATTCCTTATATCCTAGTATCATTCAAGAGTATAACATTTGCTTTACGACGATTAAAAGAAAAAACGGGATCATGTCCGATGAAGATGTGTCTAACCTTATATTGCCAGCACCGAAAACCGACTTAGGTGTTTTGCCCACGCAAATACGGAAATTGGTTGAAAGTAGAAGGGAAGTCAAGAAGTTAATGAAGTCACCGGATTTGGCGAGCGATCAATACATACAGTACAACATCCGACAAACTGCCCTCAAGCTAACGGCCAACTCTATGTACGGATGTCTCGGGTTTTCGCACTCTAGGTTTTATGCGAAGCCGCTGGCGGCGCTCGTCACAATGAAAGGAAGAGAAATTCTGATGGACACAAAAGAAATTGTCCAAAAAATGAACTATGACGTTGTCTACGGCGACACGGACAGTATAATGATCAACACTAATTGTCTAGATTACGACGCGGTTTTCAAAATAGGAGTGGATCTAAAAAAAGAAATAAACAAAAAATACAGACAAATTGAACTCGACATAGACGGCGTGTTCAGATACCTCCTTCTGTTAAAGAAAAAGAAATATGCGGCAGTTTTAATCAGCAGGAATAAAAATGGCGAATTCGTTTTCACTCAAGAACACAAAGGTTTAGACATCGTCCGTCGAGACTGGTCACAACTGGCCGCCGAGGCCGGGAAATTTATTCTTAGTCAAATCCTTTCCGAACAGACTCCCGATGATCGATTGGAAAGCATACAAAATCATCTAAATAAATTAAAAGACGATCTGATCGGTAATAAAATGCCCCTCTCGGTTTTAGCCATAACAAAGCAACTCACTAAAAACCCCAATGAATACGCTGATAAACATACGCAATCTCACGTCCAAGTGGCATTGAGGCTTAACAGTAAAAACAGTAGGAGATTCAAAAAAGGCGACATTGTGCCTTACATTATATGTGAAGATGGAACCGCTAACTCAGCCACGCAAAGGGCTTACCACATAGAAGAATTAAAGAATTCCGAACATCTCAAAGTCGATTTTAAGTATTATCTAGCACATCAGCTACATCCTGTAATATCAAGAATATGCGAACCAATAGAAGGCATGGATCCAGCCCGCGTTGCAGACTGCCTCGGCCTAGATCCCTCCGGATACAAACAAGCTGTTAAAAGAGAAACCAACGACTCGGAAACTTATGAGGTCGAGAACGAACAAGAAAAGTACCGACAATGCAAAGAGTTTGTCTTCGAATGCGTCGATGAAAACTGTAAAACTTTGAACAGAGTACGAGAATCGATCTATAAACTGGACAAAGAGAACATTTCGTTTTTAGATCGCTGTCAGAATGAAAAGTGTAATGTGAAGCCGTTAGATTATTTATCTAGCGTGCAAAATCAGTTGAGCCTGCAAATTCGACAGTACCACGCACAGTACTATGCGGGCTGGTTATCGTGTGAAGACCCGGCGTGTGGACACCGTACCGCGAGATTGCCTCAGACGTTCGCAGGAGGCTACCCCCTTTGTAGACAATGTGAGAAAGGGGTCATGTTTCGAGAATATACAGAAAAAGATTTATATTTACAGATAAACTTTTTCTTGTTTCTGTTCGATCTCAGCAAAAGCAATAAATTAAAAGTACCAGTACCTCCAACGATTGTCTCAGCATTCGAAACGCTAAAGGAAATGGTTGAAGATTGTTTAGGGCATTCCGCCTACTCAATTATAAATTTATCAAAACTATTCAGATTTTTTACTTTGGACACCAAAGCCAACAAAATGAAGGCGGAACCGACTGATTTAGATATTCTCCCAGAAACTGAACAAATAGACGCTCTTCTGGAGATGGGTGTTTTCTAA
Protein
MADSIAAQRAKRQKTDRHGRFSAFEKLKQLKGKGVKHKYDVDVLENVYDTVDEKEYTERVLQRQEDDWIEDDGTGYVEDGREIFDDDDDAYEATNSKDTGRGQKRKAKVAAQSSGKGNIRNLIGNMPSKKKEDVKISEDNILSDIISDLDANTASNVVKSTLPITKTNIVDTSKRDAQNYFKSLSANVKKPSVLKTFKEEKETESIEPDTSAVQCEKNMINHVVNEPANKKIKKPEWNIEKEIKQELNETLTPNIEEFETQDIDFDDDFSNDAKTSQVKNEPVSTGTITENPTTDITDEFFNDEFEIFPLPKKETTKELKPLTSTWPEQGGDNQTVSSVQSDGQLPLQTNETGEKVLRFYWLDAWEDRFVKPGVIYLFGKVYVDPSKKKAGCVSCCLVVKNVNRQIFLLPREYKLDPITLEPTEQEVTMMDMYEEFNSSVASELSLQEFKSRKVTKNYCFNLPDIPAQSDYLEVRYSATLPPPPTNKKYLTFSHIFGTNTSSLEIFLLERKIKGPCWLEIKNPESVQAKVSWCKLEASCEKMEHVNVVRTDGDLEPPPIVTAAINMRTTMDPKTRKTKIVMLSCLTHSSFPIHKSPPNPPFQQHFSIITKCNEIWPLDLKQALPQYKATKLTKCDTERELLNYFMVQFWKLDPDLVVGHDLQGFQQDLLIGNVLDLNIPNWSRLGRLKRSVAPQRKFAAKDAFLGRLVCDVKISAMELIRARSFDLETLCTNVLKMKEGERIDVALEDLPKYYENSRDLFQLVSLSMQDASYVLRIMCELNAIPLALQITQIAGNVMSRTLLGGRSERNEFLLLHAFTEKNYIVPDKIYGKKTTAEDGIQEDQEEGANAPKKQGKKKAAYSGGLVLDPKKGFYDKLILLMDFNSLYPSIIQEYNICFTTIKRKNGIMSDEDVSNLILPAPKTDLGVLPTQIRKLVESRREVKKLMKSPDLASDQYIQYNIRQTALKLTANSMYGCLGFSHSRFYAKPLAALVTMKGREILMDTKEIVQKMNYDVVYGDTDSIMINTNCLDYDAVFKIGVDLKKEINKKYRQIELDIDGVFRYLLLLKKKKYAAVLISRNKNGEFVFTQEHKGLDIVRRDWSQLAAEAGKFILSQILSEQTPDDRLESIQNHLNKLKDDLIGNKMPLSVLAITKQLTKNPNEYADKHTQSHVQVALRLNSKNSRRFKKGDIVPYIICEDGTANSATQRAYHIEELKNSEHLKVDFKYYLAHQLHPVISRICEPIEGMDPARVADCLGLDPSGYKQAVKRETNDSETYEVENEQEKYRQCKEFVFECVDENCKTLNRVRESIYKLDKENISFLDRCQNEKCNVKPLDYLSSVQNQLSLQIRQYHAQYYAGWLSCEDPACGHRTARLPQTFAGGYPLCRQCEKGVMFREYTEKDLYLQINFFLFLFDLSKSNKLKVPVPPTIVSAFETLKEMVEDCLGHSAYSIINLSKLFRFFTLDTKANKMKAEPTDLDILPETEQIDALLEMGVF

Summary

Description
Plays an essential role in the initiation of DNA replication. During the S phase of the cell cycle, the DNA polymerase alpha complex (composed of a catalytic subunit POLA1/p180, a regulatory subunit POLA2/p70 and two primase subunits PRIM1/p49 and PRIM2/p58) is recruited to DNA at the replicative forks via direct interactions with MCM10 and WDHD1. The primase subunit of the polymerase alpha complex initiates DNA synthesis by oligomerising short RNA primers on both leading and lagging strands. These primers are initially extended by the polymerase alpha catalytic subunit and subsequently transferred to polymerase delta and polymerase epsilon for processive synthesis on the lagging and leading strand, respectively. The reason this transfer occurs is because the polymerase alpha has limited processivity and lacks intrinsic 3' exonuclease activity for proofreading error, and therefore is not well suited for replicating long complexes (By similarity).
Plays an essential role in the initiation of DNA replication. During the S phase of the cell cycle, the DNA polymerase alpha complex (composed of a catalytic subunit POLA1/p180, a regulatory subunit POLA2/p70 and two primase subunits PRIM1/p49 and PRIM2/p58) is recruited to DNA at the replicative forks via direct interactions with MCM10 and WDHD1. The primase subunit of the polymerase alpha complex initiates DNA synthesis by oligomerising short RNA primers on both leading and lagging strands. These primers are initially extended by the polymerase alpha catalytic subunit and subsequently transferred to polymerase delta and polymerase epsilon for processive synthesis on the lagging and leading strand, respectively. The reason this transfer occurs is because the polymerase alpha has limited processivity and lacks intrinsic 3' exonuclease activity for proofreading error, and therefore is not well suited for replicating long complexes. In the cytosol, responsible for a substantial proportion of the physiological concentration of cytosolic RNA:DNA hybrids, which are necessary to prevent spontaneous activation of type I interferon responses.
Catalytic Activity
a 2'-deoxyribonucleoside 5'-triphosphate + DNA(n) = diphosphate + DNA(n+1)
Cofactor
[4Fe-4S] cluster
Subunit
The DNA polymerase alpha complex is composed of four subunits: the catalytic subunit POLA1, the regulatory subunit POLA2, and the small and the large primase subunits PRIM1 and PRIM2 respectively. Interacts with PARP1; this interaction functions as part of the control of replication fork progression. Interacts with MCM10 and WDHD1; these interactions recruit the polymerase alpha complex to the pre-replicative complex bound to DNA. Interacts with RPA1; this interaction stabilizes the replicative complex and reduces the misincorporation rate of DNA polymerase alpha by acting as a fidelity clamp (By similarity).
Miscellaneous
In eukaryotes there are five DNA polymerases: alpha, beta, gamma, delta, and epsilon which are responsible for different reactions of DNA synthesis.
Conserved regions II, IV, III and I are thought to be involved in substrate recognition, binding or PP(i) hydrolysis.
Similarity
Belongs to the DNA polymerase type-B family.
Keywords
4Fe-4S   DNA replication   DNA-binding   DNA-directed DNA polymerase   Iron   Iron-sulfur   Metal-binding   Nucleotidyltransferase   Nucleus   Transferase   Zinc   Zinc-finger   Acetylation   Complete proteome   Cytoplasm   Direct protein sequencing   Phosphoprotein   Reference proteome  
Feature
chain  DNA polymerase alpha catalytic subunit
EC Number
2.7.7.7
EMBL
BABH01023775    NWSH01000144    PCG79102.1    ODYU01000468    SOQ35314.1    RSAL01000296    + More
RVE42823.1    AGBW02013624    OWR43101.1    KQ460106    KPJ17747.1    KQ459602    KPI93536.1    GEZM01036229    JAV82878.1    NEVH01006988    PNF36210.1    QCYY01000840    ROT82337.1    GEZM01036233    GEZM01036221    JAV82875.1    GEZM01036231    JAV82876.1    KB199651    ESP04902.1    ACPB03009186    DS235171    EEB12850.1    AAMC01024916    AAMC01024917    AAMC01024918    AAMC01024919    AAMC01024920    AAMC01024921    AAMC01024922    AAMC01024923    AAMC01024924    AAMC01024925    AF202992    OUUW01000008    SPP83894.1    BC170147    BC170149    AAI70147.1    BC161721    AAI61721.1    GFXV01000554    MBW12359.1    JRES01000752    KNC28763.1    GDRN01067679    JAI64333.1    CH916374    EDV91154.1    RQTK01000097    RUS87909.1    APGK01028388    KB740686    ENN79575.1    AAKN02043886    AAKN02043887    AAKN02043888    AAKN02043889    AAKN02043890    BDOT01000002    GCF40379.1    GCES01025319    JAR61004.1    GCES01025320    JAR61003.1    GCES01025321    JAR61002.1    AB178527    BAD92009.1    GCES01025323    JAR61000.1    GFFV01000305    JAV39640.1    KL876371    KGL99741.1    AHAT01003330    AHAT01003331    AHAT01003332    KL224873    KFW65100.1    KL225966    KFM05937.1    D13543    D17384    AB178526    BAD92008.1    KL205873    KFV75823.1    KK718327    KFO55732.1    MUZQ01000009    OWK63744.1    AB178529    BAD92011.1    KB742496    EOB07765.1    CH940652    EDW59786.1    JXJN01011549    KL217721    KFO98004.1    ADON01012838    ADON01012839    ADON01012840    ADON01012841    ADON01012842    ADON01012843    ADON01012844    KK501204    KFP13320.1    AKHW03004278    KYO30161.1    JT413152    AHH40127.1    AB178525    BAD92007.1    GDHC01006522    JAQ12107.1    BEZZ01000463    GCC32811.1    CM000160    EDW96293.1    KK735615    KFR14913.1    GG666612    EEN49102.1    JH817876    EKC30035.1    GCES01025322    JAR61001.1    BX470095    KN124084    KFO22356.1    SPP83895.1    CM012456    RVE58882.1    KQ971342    EFA04623.2    AEFK01105726    AEFK01105727    AEFK01105728    AEFK01105729    AEFK01105730    AEFK01105731    AEFK01105732    AEFK01105733    AEFK01105734    AEFK01105735    GL732550    EFX79893.1    CM000070    EAL28710.2    CP012526    ALC47203.1    BFAA01000346    GCB71312.1    KE685873    ERE64154.1   
Pfam
PF08996   zf-DNA_Pol        + More
PF00136   DNA_pol_B
PF03104   DNA_pol_B_exo1
PF12254   DNA_pol_alpha_N
PF04430   DUF498
Interpro
IPR017964   DNA-dir_DNA_pol_B_CS        + More
IPR036397   RNaseH_sf       
IPR006172   DNA-dir_DNA_pol_B       
IPR006134   DNA-dir_DNA_pol_B_multi_dom       
IPR006133   DNA-dir_DNA_pol_B_exonuc       
IPR015088   Znf_DNA-dir_DNA_pol_B_alpha       
IPR024647   DNA_pol_a_cat_su_N       
IPR012337   RNaseH-like_sf       
IPR038256   Pol_alpha_znc_sf       
IPR042087   DNA_pol_B_C       
IPR023211   DNA_pol_palm_dom_sf       
IPR034095   NDUF3       
IPR036748   MTH938-like_sf       
IPR007523   NDUFAF3/AAMDC       
SUPFAM
SSF53098   SSF53098        + More
SSF64076   SSF64076       
PDB
5EXR     E-value=0,     Score=2709

Ontologies

Topology

Subcellular location
Nucleus  
Cytoplasm   In the cytosol, colocalizes with RNA:DNA hybrids with a speckled pattern.   With evidence from 4 publications.
Cytosol   In the cytosol, colocalizes with RNA:DNA hybrids with a speckled pattern.   With evidence from 4 publications.
Length:
1495
Number of predicted TMHs:
0
Exp number of AAs in TMHs:
0.03169
Exp number, first 60 AAs:
0
Total prob of N-in:
0.00001
outside
1  -  1495
 
 

Population Genetic Test Statistics

Pi
237.68679
Theta
183.767608
Tajima's D
0.866507
CLR
0.12766
CSRT
0.622118894055297
Interpretation
Uncertain
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