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77782 Ensembl ENSG00000051341 ENSMUSG00000034206 UniProt O75417 Q8CGS6 RefSeq (mRNA) NM_199420 NM_006596 NM_001159369 NM_029977 RefSeq (protein) NP_955452 NP_001152841 NP_084253 Location (UCSC) Chr 3: 121.43 – 121.55 Mb Chr 16: 36.83 – 36.92 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse DNA polymerase theta is an enzyme that in humans is encoded by the POLQ gene. This ...
A DNA polymerase is a member of a family of enzymes that catalyze the synthesis of DNA molecules from nucleoside triphosphates, the molecular precursors of DNA. These enzymes are essential for DNA replication and usually work in groups to create two identical DNA duplexes from a single original DNA duplex.
An arsenal of DNA repair mechanisms exists to repair various forms of damaged DNA and minimize genomic instability. Most DNA repair mechanisms require an intact DNA strand as template to fix the damaged strand. DNA damage prevents the normal enzymatic synthesis of DNA by the replication fork.
Shared primase-binding peptide in archaeal PolD and eukaryotic Polα [1] DNA polymerase alpha also known as Pol α is an enzyme complex found in eukaryotes that is involved in initiation of DNA replication. The DNA polymerase alpha complex consists of 4 subunits: POLA1, POLA2, PRIM1, and PRIM2. [2]
UV DNA damage results in bulky DNA adducts — these adducts are mostly thymine dimers and 6,4-photoproducts. Recognition of the damage leads to removal of a short single-stranded DNA segment that contains the lesion. The undamaged single-stranded DNA remains and DNA polymerase uses it as a template to synthesize a short complementary sequence.
The binding of ATP by Orc1 is required for ORC binding to DNA and is essential for cell viability. [11] The ATPase activity of Orc1 is involved in formation of the pre-RC. [ 21 ] [ 22 ] [ 23 ] ATP binding by Orc5 is crucial for the stability of ORC as a whole.
[7] [8] NHEJ is the main pathway in higher eukaryotes for repair of DNA DSBs. Chromosomal DSBs are the most severe type of DNA damage. During NHEJ, duplexes generated by the alignment of broken DNA ends usually contain small gaps that need to be filled in by a DNA polymerase. DNA polymerase lambda can perform this function. [9]
DNA polymerase delta catalytic subunit (DPOD1) is an enzyme that is encoded in the human by the POLD1 gene, in the DNA polymerase delta complex. [ 5 ] [ 6 ] [ 7 ] DPOD1 is responsible for synthesizing the lagging strand of DNA, and has also been implicated in some activities at the leading strand (Figure 1).