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ATP + 5'-dephospho-DNA ADP + 5'-phospho-DNA 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 .
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]
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 ...
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.
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.
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 ...
After cleavage of the 3' signaling region that directs the assembly of the complex, polyadenylate polymerase (PAP) adds the polyadenine tail to the new 3' end. The rate at which PAP adds adenine nucleotides is dependent on the presence of another regulatory protein, PABPII (poly-adenine binding protein II). The first few nucleotides added by ...
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