DNA polymerase delta

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DNA-directed DNA polymerase
EC number
CAS number 9012-90-2
IntEnz IntEnz view
ExPASy NiceZyme view
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum

DNA polymerase delta is an enzyme complex found in eukaryotes that is involved in DNA replication and repair. The DNA polymerase delta complex consists of 4 subunits: POLD1, POLD2, POLD3, and POLD4.[1] DNA Pol δ is an enzyme used for both leading and lagging strand synthesis.[2][3] It exhibits increased processivity when interacting with the proliferating cell nuclear antigen (PCNA). As well, the multisubunit protein replication factor C, through its role as the clamp loader for PCNA (which involves catalysing the loading of PCNA on to DNA) is important for DNA Pol δ function.


  1. ^ Liu G, Warbrick E (October 2006). "The p66 and p12 subunits of DNA polymerase delta are modified by ubiquitin and ubiquitin-like proteins". Biochem. Biophys. Res. Commun. 349 (1): 360–6. doi:10.1016/j.bbrc.2006.08.049. PMID 16934752. 
  2. ^ Johnson RE, Klassen R, Prakash L, Prakash S (July 16, 2015). "A Major Role of DNA Polymerase δ in Replication of Both the Leading and Lagging DNA Strands". Mol. Cell. 59 (2): 163–175. doi:10.1016/j.molcel.2015.05.038. PMC 4517859Freely accessible. PMID 26145172. 
  3. ^ https://www.ncbi.nlm.nih.gov.elibrary.mdanderson.org/pubmed/?term=DNA+Polymerases+Divide+the+Labor+of+Genome+Replication

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This article incorporates text from the United States National Library of Medicine, which is in the public domain.