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RNA polymerase II ( RNAP II and Pol II) is a multiprotein complex that transcribes DNA into precursors of messenger RNA (mRNA) and most small nuclear RNA (snRNA) and microRNA. [ 1][ 2] It is one of the three RNAP enzymes found in the nucleus of eukaryotic cells. [ 3] A 550 kDa complex of 12 subunits, RNAP II is the most studied type of RNA ...
This repair polymerase is involved in excision repair with both 3'–5' and 5'–3' exonuclease activity and processing of Okazaki fragments generated during lagging strand synthesis. [21] Pol I is the most abundant polymerase, accounting for >95% of polymerase activity in E. coli ; yet cells lacking Pol I have been found suggesting Pol I ...
2 DNA Pol III enzymes, each comprising α, ε and θ subunits. (It has been proven that there is a third copy of Pol III at the replisome. [1]) the α subunit (encoded by the dnaE gene) has the polymerase activity. the ε subunit has 3'→5' exonuclease activity. the θ subunit stimulates the ε subunit's proofreading.
DNA Polymerase II. (str. K-12 substr. MG1655) DNA polymerase II (also known as DNA Pol II or Pol II) is a prokaryotic DNA-dependent DNA polymerase encoded by the PolB gene. [ 1] DNA Polymerase II is an 89.9-kDa protein and is a member of the B family of DNA polymerases. It was originally isolated by Thomas Kornberg in 1970, and characterized ...
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RNA polymerase III. In eukaryote cells, RNA polymerase III (also called Pol III) is a protein that transcribes DNA to synthesize 5S ribosomal RNA, tRNA, and other small RNAs. The genes transcribed by RNA Pol III fall in the category of "housekeeping" genes whose expression is required in all cell types and most environmental conditions.
RNA polymerase (purple) unwinding the DNA double helix. It uses one strand (darker orange) as a template to create the single-stranded messenger RNA (green). In molecular biology, RNA polymerase (abbreviated RNAP or RNApol ), or more specifically DNA-directed/dependent RNA polymerase ( DdRP ), is an enzyme that catalyzes the chemical reactions ...
Sail components include the features that define a sail 's shape and function, plus its constituent parts from which it is manufactured. A sail may be classified in a variety of ways, including by its orientation to the vessel (e.g. fore-and-aft) and its shape, (e.g. (a)symmetrical, triangular, quadrilateral, etc.).