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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. During this process, DNA polymerase ...
Nick translation is a biological process in which a single-stranded DNA nick serves as the marker for DNA polymerase to excise and replace possibly damaged nucleotides. [3] At the end of the segment that DNA polymerase acts on, DNA ligase must repair the final segment of DNA backbone in order to complete the repair process. [4]
DNA replication. DNA Polymerase I (PDB) Molecular mechanism of PCR. A strip of eight PCR tubes. The history of the polymerase chain reaction (PCR) has variously been described as a classic "Eureka!" moment, [1] or as an example of cooperative teamwork between disparate researchers. [2] Following is a list of events before, during, and after its ...
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] Pol α has limited processivity and lacks 3′ exonuclease activity for proofreading errors.
Nick translation. Nick translation[1] (or head translation), developed in 1977 by Peter Rigby and Paul Berg, is a tagging technique in molecular biology in which DNA Polymerase I is used to replace some of the nucleotides of a DNA sequence with their labeled analogues, creating a tagged DNA sequence which can be used as a probe in fluorescent ...
InterPro. 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.
DNA replication: The double helix is unwound by a helicase and topoisomerase. Next, one DNA polymerase produces the leading strand copy. Another DNA polymerase binds to the lagging strand. This enzyme makes discontinuous segments (called Okazaki fragments) before DNA ligase joins them together.
Polymerase. In biochemistry, a polymerase is an enzyme (EC 2.7.7.6/7/19/48/49) that synthesizes long chains of polymers or nucleic acids. DNA polymerase and RNA polymerase are used to assemble DNA and RNA molecules, respectively, by copying a DNA template strand using base-pairing interactions or RNA by half ladder replication. A DNA polymerase ...