DNA-directed RNA polymerase
- DNA-directed RNA polymerase
- DNA-di·rect·ed RNA po·lym·er·ase (dĭ-rekґtəd pə-limґər-ās) [EC 2.7.7.6] any of the enzymes of the transferase class that catalyze the template-directed step-by-step addition of ribonucleotides to the 3′ end of a growing RNA chain, using a single-stranded DNA template. The reaction is important in the flow of information from DNA to proteins. Prokaryotes have a single such polymerase, while eukaryotes have three: type I transcribes most ribosomal RNA (rRNA) genes; type II synthesizes messenger (mRNA), some small nuclear (snRNA), and many small nucleolar RNA (snoRNA) molecules; and type III transcribes the genes for one species of rRNA, for transfer RNA (tRNA), and for various small RNA molecules. Called also RNA polymerase.
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2011.
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(RNA-polymerase)-subunit kinase — In enzymology, a [RNA polymerase] subunit kinase (EC number|2.7.11.23) is an enzyme that catalyzes the chemical reaction:ATP + [DNA directed RNA polymerase] ightleftharpoons ADP + phospho [DNA directed RNA polymerase] Thus, the two substrates of… … Wikipedia
RNA polymerase — A polymerase is an enzyme that catalyzes the joining of many smaller molecules (called monomers) to form a big molecule (a macromolecule). RNA polymerase is a unique enzyme that makes (synthesizes) the macromolecule RNA using DNA as the template … Medical dictionary
RNA polymerase II — (also called RNAP II and Pol II) is an enzyme found in eukaryotic cells. It catalyzes the transcription of DNA to synthesize precursors of mRNA and most snRNA and microRNA. [cite journal | author = Kronberg, R.D. | title = Eukaryotic… … Wikipedia
DNA-directed DNA polymerase — DNA di·rect·ed DNA po·lym·er·ase (dĭ rekґtəd pə limґər ās) [EC 2.7.7.7] any of the enzymes of the transferase class that catalyze the template directed, step by step addition of deoxyribonucleotides to the 3′ end of … Medical dictionary
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