Medical Definition of DNA-directed RNA polymerase
1.
A group of enzymes that catalyses DNA template-directed extension of the 3'-end of an RNA strand one nucleotide at a time. They can initiate a chain de novo. In eukaryotes, three forms of the enzyme have been distinguished on the basis of sensitivity to alpha-amanitin, and the type of RNA synthesised.
Chemical name: Nucleoside-triphosphate:RNA nucleotidyltransferase (DNA-directed)
Registry number: EC 2.7.7.6
(12 Dec 1998)
Lexicographical Neighbors of DNA-directed RNA Polymerase
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