| Identification |
|---|
| HMDB Protein ID
| CDBP00894 |
| Secondary Accession Numbers
| Not Available |
| Name
| DNA polymerase alpha catalytic subunit |
| Description
| Not Available |
| Synonyms
|
- DNA polymerase alpha catalytic subunit p180
|
| Gene Name
| POLA1 |
| Protein Type
| Enzyme |
| Biological Properties |
|---|
| General Function
| Involved in nucleotide binding |
| Specific Function
| 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.
|
| GO Classification
|
| Biological Process |
| S phase of mitotic cell cycle |
| DNA replication initiation |
| M/G1 transition of mitotic cell cycle |
| virus-host interaction |
| DNA replication, synthesis of RNA primer |
| leading strand elongation |
| regulation of transcription involved in G1/S phase of mitotic cell cycle |
| translesion synthesis |
| telomere maintenance via recombination |
| telomere maintenance via semi-conservative replication |
| lagging strand elongation |
| double-strand break repair via nonhomologous end joining |
| cell proliferation |
| Cellular Component |
| cytoplasm |
| nucleolus |
| nucleoplasm |
| nuclear matrix |
| alpha DNA polymerase:primase complex |
| nuclear envelope |
| Component |
| intracellular membrane-bounded organelle |
| nucleus |
| organelle |
| membrane-bounded organelle |
| Function |
| binding |
| nucleotide binding |
| catalytic activity |
| transferase activity |
| transferase activity, transferring phosphorus-containing groups |
| nucleoside binding |
| nucleotidyltransferase activity |
| dna polymerase activity |
| dna-directed dna polymerase activity |
| nucleic acid binding |
| dna binding |
| Molecular Function |
| 3'-5' exonuclease activity |
| DNA-directed DNA polymerase activity |
| double-stranded DNA binding |
| chromatin binding |
| purine nucleotide binding |
| pyrimidine nucleotide binding |
| DNA binding |
| nucleotide binding |
| nucleoside binding |
| metal ion binding |
| 4 iron, 4 sulfur cluster binding |
| Process |
| metabolic process |
| nitrogen compound metabolic process |
| cellular nitrogen compound metabolic process |
| nucleobase, nucleoside, nucleotide and nucleic acid metabolic process |
| macromolecule metabolic process |
| cellular macromolecule metabolic process |
| dna metabolic process |
| dna replication |
|
| Cellular Location
|
- Nucleus
|
| Pathways
|
| Name | SMPDB/Pathwhiz | KEGG | | DNA replication | Not Available |  |
|
| Gene Properties |
|---|
| Chromosome Location
| X |
| Locus
| Xp22.1-p21.3 |
| SNPs
| POLA1 |
| Gene Sequence
|
>4389 bp
ATGGCACCTGTGCACGGCGACGACTCTCTGTCAGATTCAGGGAGTTTTGTATCTTCTCGA
GCCCGGCGAGAAAAAAAATCAAAGAAGGGGCGCCAAGAAGCCCTAGAAAGACTGAAAAAG
GCTAAAGCTGGTGAGAAGTATAAATATGAAGTCGAGGACTTCACAGGTGTTTATGAAGAA
GTTGATGAAGAACAGTATTCGAAGCTGGTTCAGGCACGCCAGGATGATGACTGGATTGTG
GATGATGATGGTATTGGCTATGTGGAAGATGGCCGAGAGATTTTTGATGATGACCTTGAA
GATGATGCCCTTGATGCTGATGAGAAAGGAAAAGATGGTAAAGCACGCAATAAAGACAAG
AGGAATGTAAAGAAGCTCGCAGTGACAAAACCGAACAACATTAAGTCAATGTTCATTGCT
TGTGCTGGAAAGAAAACTGCAGATAAAGCTGTAGACTTGTCCAAGGATGGTCTGCTAGGT
GACATTCTACAGGATCTTAACACTGAGACACCTCAAATAACTCCACCACCTGTAATGATA
CTGAAGAAGAAAAGATCCATTGGAGCTTCACCGAATCCTTTCTCTGTGCACACCGCCACG
GCAGTTCCTTCAGGAAAAATTGCTTCCCCTGTCTCCAGAAAGGAGCCTCCATTAACTCCT
GTTCCTCTTAAACGTGCTGAATTTGCTGGCGATGATGTACAGGTCGAGAGTACAGAAGAA
GAGCAGGAGTCAGGGGCAATGGAGTTTGAAGATGGTGACTTTGATGAGCCCATGGAAGTT
GAAGAGGTGGACCTGGAGCCTATGGCTGCCAAGGCTTGGGACAAAGAGAGTGAGCCAGCA
GAGGAAGTGAAACAAGAGGCGGATTCTGGGAAAGGGACCGTGTCCTACTTAGGAAGTTTT
CTCCCGGATGTCTCTTGTTGGGACATTGATCAAGAAGGTGATAGCAGTTTCTCAGTGCAA
GAAGTTCAAGTGGATTCCAGTCACCTCCCATTGGTAAAAGGGGCAGATGAGGAACAAGTA
TTCCACTTTTATTGGTTGGATGCTTATGAGGATCAGTACAACCAACCAGGTGTGGTATTT
CTGTTTGGGAAAGTTTGGATTGAATCAGCCGAGACCCATGTGAGCTGTTGTGTCATGGTG
AAAAATATCGAGCGAACGCTTTACTTCCTTCCCCGTGAAATGAAAATTGATCTAAATACG
GGGAAAGAAACAGGAACTCCAATTTCAATGAAGGATGTTTATGAGGAATTTGATGAGAAA
ATAGCAACAAAATATAAAATTATGAAGTTCAAGTCTAAGCCAGTGGAAAAGAACTATGCT
TTTGAGATACCTGATGTTCCAGAAAAATCTGAGTACTTGGAAGTTAAATACTCGGCTGAA
ATGCCACAGCTTCCTCAAGATTTGAAAGGAGAAACTTTTTCTCATGTATTTGGGACCAAC
ACATCTAGCCTGGAACTGTTCTTGATGAACAGAAAGATCAAAGGACCTTGTTGGCTTGAA
GTAAAAAAGTCCACAGCTCTTAATCAGCCAGTCAGTTGGTGTAAAGTTGAGGCAATGGCT
TTGAAACCAGACCTGGTGAATGTAATTAAGGATGTCAGTCCACCACCGCTTGTCGTGATG
GCTTTCAGCATGAAGACAATGCAGAATGCAAAGAACCATCAAAATGAGATTATTGCTATG
GCAGCTTTGGTCCATCACAGTTTTGCATTGGATAAAGCAGCCCCAAAGCCTCCCTTTCAG
TCACACTTCTGTGTTGTGTCTAAACCAAAGGACTGTATTTTTCCATATGCTTTCAAAGAA
GTCATTGAGAAAAAGAATGTGAAGGTTGAGGTTGCTGCAACAGAAAGAACACTGCTAGGT
TTTTTCCTTGCAAAAGTTCACAAAATTGATCCTGATATCATTGTGGGTCATAATATTTAT
GGGTTTGAACTGGAAGTACTACTGCAGAGAATTAATGTGTGCAAAGCTCCTCACTGGTCC
AAGATAGGTCGACTGAAGCGATCCAACATGCCAAAGCTTGGGGGCCGGAGTGGATTTGGT
GAAAGAAATGCTACCTGTGGTCGAATGATCTGTGATGTGGAAATTTCAGCAAAGGAATTG
ATTCGTTGTAAAAGCTACCATCTGTCTGAACTTGTTCAGCAGATTCTAAAAACTGAAAGG
GTTGTAATCCCAATGGAAAATATACAAAATATGTACAGTGAATCTTCTCAACTGTTATAC
CTGTTGGAACACACCTGGAAAGATGCCAAGTTCATTTTGCAGATCATGTGTGAGCTAAAT
GTTCTTCCATTAGCATTGCAGATCACTAACATCGCTGGGAACATTATGTCCAGGACGCTG
ATGGGTGGACGATCCGAGCGTAACGAGTTCTTGTTGCTTCATGCATTTTACGAAAACAAC
TATATTGTGCCTGACAAGCAGATTTTCAGAAAGCCTCAGCAAAAACTGGGAGATGAAGAT
GAAGAAATTGATGGAGATACCAATAAATACAAGAAAGGACGTAAGAAAGGAGCTTATGCT
GGAGGCTTGGTTTTGGACCCCAAAGTTGGTTTTTATGATAAGTTCATTTTGCTTCTGGAC
TTCAACAGTCTATATCCTTCCATCATTCAGGAATTTAACATTTGTTTTACAACAGTACAA
AGAGTTGCTTCAGAGGCACAGAAAGTTACAGAGGATGGAGAACAAGAACAGATCCCTGAG
TTGCCAGATCCAAGCTTAGAAATGGGCATTTTGCCCAGAGAGATCCGGAAACTGGTAGAA
CGGAGAAAACAAGTCAAACAGCTAATGAAACAGCAAGACTTAAATCCAGACCTTATTCTT
CAGTATGACATTCGACAGAAGGCTTTGAAGCTCACAGCGAACAGTATGTATGGTTGCCTG
GGATTTTCCTATAGCAGATTTTACGCCAAACCACTGGCTGCCTTGGTGACATACAAAGGA
AGGGAGATTTTGATGCATACGAAAGAGATGGTACAAAAGATGAATCTTGAAGTTATTTAT
GGAGATACAGATTCAATTATGATAAACACCAATAGCACCAATCTGGAAGAAGTATTTAAG
TTGGGAAACAAGGTAAAAAGTGAAGTGAATAAGTTGTACAAACTGCTTGAAATAGACATT
GATGGGGTTTTCAAGTCTCTGCTACTGCTGAAAAAAAAGAAGTACGCTGCTCTGGTTGTT
GAGCCAACGTCGGATGGGAATTATGTCACCAAACAGGAGCTCAAAGGATTAGATATAGTT
AGAAGAGATTGGTGTGATCTTGCTAAAGACACTGGAAACTTTGTGATTGGCCAGATTCTT
TCTGATCAAAGCCGGGACACTATAGTGGAAAACATTCAGAAGAGGCTGATAGAAATTGGA
GAAAATGTGCTAAATGGCAGTGTCCCAGTGAGCCAGTTTGAAATTAACAAGGCATTGACA
AAGGATCCCCAGGATTACCCTGATAAAAAAAGCCTACCTCATGTACATGTTGCCCTCTGG
ATAAATTCTCAAGGAGGCAGAAAGGTGAAAGCTGGAGATACTGTGTCATATGTCATCTGT
CAGGATGGATCAAACCTCACTGCAAGTCAGAGGGCCTATGCGCCTGAGCAGCTGCAGAAA
CAGGATAATCTAACCATTGACACCCAGTACTACCTGGCCCAGCAGATCCACCCAGTCGTG
GCTCGGATCTGTGAACCAATAGACGGAATTGATGCTGTCCTCATTGCAACGTGGTTGGGA
CTTGACCCCACCCAATTTAGAGTTCATCATTATCATAAAGATGAAGAGAATGATGCTCTA
CTTGGTGGCCCAGCACAGCTCACTGATGAAGAGAAATACAGGGACTGTGAAAGATTCAAA
TGTCCATGCCCTACATGTGGAACTGAGAATATTTATGATAATGTCTTTGATGGTTCGGGA
ACAGATATGGAGCCCAGCTTGTATCGTTGCAGTAACATCGATTGTAAGGCTTCACCTCTG
ACCTTTACAGTACAACTGAGCAACAAATTGATCATGGACATTAGACGTTTCATTAAAAAG
TACTATGATGGCTGGTTGATATGTGAAGAGCCAACCTGTCGCAATCGAACTCGTCACCTT
CCCCTTCAATTCTCCCGAACTGGGCCTCTTTGCCCAGCCTGCATGAAAGCTACACTTCAA
CCAGAGTATTCTGACAAGTCCCTGTACACCCAGCTGTGCTTTTACCGGTACATTTTTGAT
GCGGAGTGTGCACTGGAGAAACTTACTACCGATCATGAGAAAGATAAATTGAAGAAGCAA
TTTTTTACCCCCAAAGTTCTGCAGGACTACAGAAAACTCAAGAACACAGCAGAGCAATTC
TTGTCCCGAAGTGGCTACTCCGAAGTGAATCTGAGCAAACTCTTCGCTGGTTGTGCCGTG
AAATCCTAA
|
| Protein Properties |
|---|
| Number of Residues
| 1462 |
| Molecular Weight
| 165911.405 |
| Theoretical pI
| 5.848 |
| Pfam Domain Function
|
|
| Signals
|
Not Available
|
|
Transmembrane Regions
|
Not Available
|
| Protein Sequence
|
>DNA polymerase alpha catalytic subunit
MAPVHGDDSLSDSGSFVSSRARREKKSKKGRQEALERLKKAKAGEKYKYEVEDFTGVYEE
VDEEQYSKLVQARQDDDWIVDDDGIGYVEDGREIFDDDLEDDALDADEKGKDGKARNKDK
RNVKKLAVTKPNNIKSMFIACAGKKTADKAVDLSKDGLLGDILQDLNTETPQITPPPVMI
LKKKRSIGASPNPFSVHTATAVPSGKIASPVSRKEPPLTPVPLKRAEFAGDDVQVESTEE
EQESGAMEFEDGDFDEPMEVEEVDLEPMAAKAWDKESEPAEEVKQEADSGKGTVSYLGSF
LPDVSCWDIDQEGDSSFSVQEVQVDSSHLPLVKGADEEQVFHFYWLDAYEDQYNQPGVVF
LFGKVWIESAETHVSCCVMVKNIERTLYFLPREMKIDLNTGKETGTPISMKDVYEEFDEK
IATKYKIMKFKSKPVEKNYAFEIPDVPEKSEYLEVKYSAEMPQLPQDLKGETFSHVFGTN
TSSLELFLMNRKIKGPCWLEVKSPQLLNQPVSWCKVEAMALKPDLVNVIKDVSPPPLVVM
AFSMKTMQNAKNHQNEIIAMAALVHHSFALDKAAPKPPFQSHFCVVSKPKDCIFPYAFKE
VIEKKNVKVEVAATERTLLGFFLAKVHKIDPDIIVGHNIYGFELEVLLQRINVCKAPHWS
KIGRLKRSNMPKLGGRSGFGERNATCGRMICDVEISAKELIRCKSYHLSELVQQILKTER
VVIPMENIQNMYSESSQLLYLLEHTWKDAKFILQIMCELNVLPLALQITNIAGNIMSRTL
MGGRSERNEFLLLHAFYENNYIVPDKQIFRKPQQKLGDEDEEIDGDTNKYKKGRKKAAYA
GGLVLDPKVGFYDKFILLLDFNSLYPSIIQEFNICFTTVQRVASEAQKVTEDGEQEQIPE
LPDPSLEMGILPREIRKLVERRKQVKQLMKQQDLNPDLILQYDIRQKALKLTANSMYGCL
GFSYSRFYAKPLAALVTYKGREILMHTKEMVQKMNLEVIYGDTDSIMINTNSTNLEEVFK
LGNKVKSEVNKLYKLLEIDIDGVFKSLLLLKKKKYAALVVEPTSDGNYVTKQELKGLDIV
RRDWCDLAKDTGNFVIGQILSDQSRDTIVENIQKRLIEIGENVLNGSVPVSQFEINKALT
KDPQDYPDKKSLPHVHVALWINSQGGRKVKAGDTVSYVICQDGSNLTASQRAYAPEQLQK
QDNLTIDTQYYLAQQIHPVVARICEPIDGIDAVLIATWLGLDPTQFRVHHYHKDEENDAL
LGGPAQLTDEEKYRDCERFKCPCPTCGTENIYDNVFDGSGTDMEPSLYRCSNIDCKASPL
TFTVQLSNKLIMDIRRFIKKYYDGWLICEEPTCRNRTRHLPLQFSRTGPLCPACMKATLQ
PEYSDKSLYTQLCFYRYIFDAECALEKLTTDHEKDKLKKQFFTPKVLQDYRKLKNTAEQF
LSRSGYSEVNLSKLFAGCAVKS
|
| External Links |
|---|
| GenBank ID Protein
| 35568 |
| UniProtKB/Swiss-Prot ID
| P09884 |
| UniProtKB/Swiss-Prot Entry Name
| DPOLA_HUMAN |
| PDB IDs
|
|
| GenBank Gene ID
| X06745 |
| GeneCard ID
| POLA1 |
| GenAtlas ID
| POLA1 |
| HGNC ID
| HGNC:9173 |
| References |
|---|
| General References
| Not Available |