Identification
HMDB Protein ID CDBP00907
Secondary Accession Numbers Not Available
Name DNA polymerase iota
Description Not Available
Synonyms
  1. Eta2
  2. RAD30 homolog B
Gene Name POLI
Protein Type Enzyme
Biological Properties
General Function Involved in damaged DNA binding
Specific Function Error-prone DNA polymerase specifically involved in DNA repair. Plays an important role in translesion synthesis, where the normal high-fidelity DNA polymerases cannot proceed and DNA synthesis stalls. Favors Hoogsteen base-pairing in the active site. Inserts the correct base with high-fidelity opposite an adenosine template. Exhibits low fidelity and efficiency opposite a thymidine template, where it will preferentially insert guanosine. May play a role in hypermutation of immunogobulin genes. Forms a Schiff base with 5'-deoxyribose phosphate at abasic sites, but may not have lyase activity.
GO Classification
Biological Process
DNA repair
DNA replication
Cellular Component
nucleoplasm
Function
catalytic activity
transferase activity
transferase activity, transferring phosphorus-containing groups
nucleotidyltransferase activity
dna polymerase activity
dna-directed dna polymerase activity
damaged dna binding
nucleic acid binding
dna binding
binding
Molecular Function
metal ion binding
DNA-directed DNA polymerase activity
damaged DNA binding
Process
dna repair
metabolic process
macromolecule metabolic process
cellular macromolecule metabolic process
dna metabolic process
Cellular Location
  1. Nucleus
Pathways
Gene Properties
Chromosome Location 18
Locus 18q21.1
SNPs POLI
Gene Sequence
>2148 bp
ATGGAACTGGCGGACGTGGGGGCGGCAGCCAGCTCGCAGGGAGTTCATGATCAAGTGTTG
CCCACACCAAATGCTTCATCCAGAGTCATAGTACATGTGGATCTGGATTGCTTTTATGCA
CAAGTAGAAATGATCTCAAATCCAGAGCTAAAAGACAAACCTTTAGGGGTTCAACAGAAA
TATTTGGTGGTTACCTGCAACTATGAAGCTAGGAAACTTGGAGTTAAGAAACTTATGAAT
GTCAGAGATGCAAAAGAAAAGTGTCCACAGTTGGTATTAGTTAATGGAGAAGACCTGACC
CGCTACAGAGAAATGTCTTATAAGGTTACAGAATTACTGGAAGAATTTAGTCCAGTTGTT
GAGAGACTTGGATTTGATGAAAATTTTGTGGATCTAACAGAAATGGTTGAGAAGAGACTA
CAGCAGCTGCAAAGTGATGAACTTTCTGCGGTGACTGTGTCGGGTCATGTATACAATAAT
CAGTCTATAAACCTGCTTGACGTCTTGCACATCAGACTACTTGTTGGATCTCAGATTGCA
GCAGAGATGCGGGAAGCCATGTATAATCAGTTGGGGCTCACTGGCTGTGCTGGAGTGGCT
TCTAATAAACTGTTGGCAAAATTAGTTTCTGGTGTCTTTAAACCAAATCAACAAACAGTC
TTATTACCTGAAAGTTGTCAACATCTTATTCATAGTTTGAATCACATAAAGGAAATACCT
GGTATTGGCTATAAAACTGCCAAATGTCTTGAAGCACTGGGTATCAATAGTGTGCGTGAT
CTCCAAACCTTTTCACCCAAAATTTTAGAAAAAGAATTAGGAATTTCAGTTGCTCAGCGT
ATCCAAAAGCTCAGTTTTGGAGAGGATAACTCCCCTGTGATACTCTCAGGACCACCTCAG
TCCTTTAGTGAAGAAGATTCATTTAAAAAATGTTCATCTGAAGTTGAAGCTAAAAATAAG
ATTGAAGAACTACTTGCTAGTCTTTTAAACAGAGTATGCCAAGATGGAAGGAAGCCTCAT
ACAGTGAGATTAATAATCCGTCGGTATTCCTCTGAGAAGCACTATGGTCGTGAGAGTCGT
CAGTGCCCTATTCCTTCACATGTAATTCAGAAATTAGGGACAGGAAATTATGATGTGATG
ACCCCAATGGTTGATATACTTATGAAACTTTTTCGAAATATGGTGAATGTGAAGATGCCA
TTTCACCTTACCCTTCTAAGTGTGTGCTTCTGCAACCTTAAAGCACTAAATACTGCTAAG
AAAGGGCTTATTGATTATTATTTAATGCCATCATTATCAACTACTTCACGCTCTGGCAAG
CACAGTTTTAAAATGAAAGACACTCATATGGAAGATTTTCCCAAAGACAAAGAAACAAAC
CGGGATTTCCTACCAAGTGGAAGAATTGAAAGTACAAGAACTAGGGAGTCTCCACTAGAT
ACCACAAATTTTTCTAAAGAAAAAGACATTAATGAATTCCCACTCTGTTCACTTCCTGAA
GGTGTTGACCAAGAAGTCTTCAAGCAGCTTCCAGTAGATATTCAAGAAGAAATCCTTTCT
GGAAAATCTAGGGAAAAATTTCAAGGGAAAGGAAGTGTGAGTTGTCCATTACATGCCTCT
AGAGGAGTATTATCTTTCTTTTCTAAAAAACAAATGCAAGATATTCCCATAAATCCTAGA
GATCATTTATCCAGTAGCAAACAGGTATCCTCTGTATCTCCTTGTGAACCGGGAACATCA
GGCTTTAATAGCAGTAGTTCTTCTTACATGTCTAGCCAAAAGGATTATTCATATTATTTA
GATAATAGATTAAAAGATGAACGAATAAGTCAAGGACCTAAAGAACCTCAAGGATTCCAC
TTTACAAATTCAAACCCTGCTGTGTCTGCTTTTCATTCATTTCCAAACTTGCAGAGTGAG
CAACTTTTCTCCAGAAACCACACTACAGATAGCCATAAGCAAACAGTAGCAACAGACTCT
CATGAAGGACTTACAGAAAATAGAGAGCCAGATTCTGTTGATGAGAAAATTACTTTCCCT
TCTGACATTGATCCTCAAGTTTTCTATGAACTACCAGAAGCAGTACAAAAGGAACTGCTG
GCAGAGTGGAAGAGAACAGGATCAGATTTCCACATTGGACATAAATAA
Protein Properties
Number of Residues 715
Molecular Weight 83005.335
Theoretical pI 6.08
Pfam Domain Function
Signals Not Available
Transmembrane Regions Not Available
Protein Sequence
>DNA polymerase iota
MELADVGAAASSQGVHDQVLPTPNASSRVIVHVDLDCFYAQVEMISNPELKDKPLGVQQK
YLVVTCNYEARKLGVKKLMNVRDAKEKCPQLVLVNGEDLTRYREMSYKVTELLEEFSPVV
ERLGFDENFVDLTEMVEKRLQQLQSDELSAVTVSGHVYNNQSINLLDVLHIRLLVGSQIA
AEMREAMYNQLGLTGCAGVASNKLLAKLVSGVFKPNQQTVLLPESCQHLIHSLNHIKEIP
GIGYKTAKCLEALGINSVRDLQTFSPKILEKELGISVAQRIQKLSFGEDNSPVILSGPPQ
SFSEEDSFKKCSSEVEAKNKIEELLASLLNRVCQDGRKPHTVRLIIRRYSSEKHYGRESR
QCPIPSHVIQKLGTGNYDVMTPMVDILMKLFRNMVNVKMPFHLTLLSVCFCNLKALNTAK
KGLIDYYLMPSLSTTSRSGKHSFKMKDTHMEDFPKDKETNRDFLPSGRIESTRTRESPLD
TTNFSKEKDINEFPLCSLPEGVDQEVFKQLPVDIQEEILSGKSREKFQGKGSVSCPLHAS
RGVLSFFSKKQMQDIPINPRDHLSSSKQVSSVSPCEPGTSGFNSSSSSYMSSQKDYSYYL
DNRLKDERISQGPKEPQGFHFTNSNPAVSAFHSFPNLQSEQLFSRNHTTDSHKQTVATDS
HEGLTENREPDSVDEKITFPSDIDPQVFYELPEAVQKELLAEWKRTGSDFHIGHK
GenBank ID Protein 5739208
UniProtKB/Swiss-Prot ID Q9UNA4
UniProtKB/Swiss-Prot Entry Name POLI_HUMAN
PDB IDs
GenBank Gene ID AF140501
GeneCard ID POLI
GenAtlas ID POLI
HGNC ID HGNC:9182
References
General References Not Available