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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 ...
DNA Polymerase V (Pol V) is a polymerase enzyme involved in DNA repair mechanisms in bacteria, such as Escherichia coli. It is composed of a UmuD' homodimer and a UmuC monomer, forming the UmuD'2C protein complex. [1] It is part of the Y-family of DNA Polymerases, which are capable of performing DNA translesion synthesis (TLS). [2]
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.
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.
Thus, the two substrates of this enzyme are ATP and 5'-dephospho-DNA, whereas its two products are ADP and 5'-phospho-DNA. Polynucleotide kinase is a T7 bacteriophage (or T4 bacteriophage) enzyme that catalyzes the transfer of a gamma-phosphate from ATP to the free hydroxyl end of the 5' DNA or RNA. The resulting product could be used to end ...
In addition to polymerase activity, these enzymes have a lyase domain that removes the 5' dRP left behind by AP endonuclease cleavage. During long-patch BER, DNA synthesis is thought to be mediated by pol δ and pol ε along with the processivity factor PCNA, the same polymerases that carry out DNA replication. These polymerases perform ...
Microhomology-mediated end joining (MMEJ), also known as alternative nonhomologous end-joining (Alt-NHEJ) is one of the pathways for repairing double-strand breaks in DNA. As reviewed by McVey and Lee, [1] the foremost distinguishing property of MMEJ is the use of microhomologous sequences during the alignment of broken ends before joining, thereby resulting in deletions flanking the original ...
The breakage can be either 3' or 5' of the site, depending on the variant of the enzyme. End processing enzymes then prepare the site for nick ligation, which is performed by DNA polymerase. [4] The base inserted into the nick is determined by the corresponding base on the opposite strand. The nick is then sealed by DNA ligase.
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