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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.
Damaged DNA can act as a steric block to replicative polymerases, thereby leading to incomplete DNA replication or the formation of secondary DNA strand breaks at the sites of replication stalling. Incomplete DNA synthesis and DNA strand breaks are both potential sources of genomic instability.
Diagram of both the TC-NER and GG-NER pathways. The two pathways differ only in initial DNA damage recognition. [1] Nucleotide excision repair is a DNA repair mechanism. [2] DNA damage occurs constantly because of chemicals (e.g. intercalating agents), radiation and other mutagens.
Polynucleotide Phosphorylase (PNPase) is a bifunctional enzyme with a phosphorolytic 3' to 5' exoribonuclease activity and a 3'-terminal oligonucleotide polymerase activity. [2] That is, it dismantles the RNA chain starting at the 3' end and working toward the 5' end. [1] It also synthesizes long, highly heteropolymeric tails in vivo.
Pol λ is a member of the X family of DNA polymerases. It is thought to resynthesize missing nucleotides during non-homologous end joining (NHEJ), a pathway of DNA double-strand break (DSB) repair. [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.
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]
DNA polymerase I (or Pol I) is an enzyme that participates in the process of prokaryotic DNA replication. Discovered by Arthur Kornberg in 1956, [1] it was the first known DNA polymerase (and the first known of any kind of polymerase). It was initially characterized in E. coli and is ubiquitous in prokaryotes.