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Information on EC - DNA-directed RNA polymerase

for references in articles please use BRENDA:EC2.7.7.6
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EC Tree
     2 Transferases
         2.7 Transferring phosphorus-containing groups
             2.7.7 Nucleotidyltransferases
       DNA-directed RNA polymerase
IUBMB Comments
Catalyses DNA-template-directed extension of the 3'- end of an RNA strand by one nucleotide at a time. 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 synthesized. See also EC (polynucleotide adenylyltransferase) and EC (RNA-directed RNA polymerase).
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The enzyme appears in viruses and cellular organisms
C RNA formation factors, chloroplast soluble RNA polymerase, deoxyribonucleic acid-dependent ribonucleic acid polymerase, DNA-dependent ribonucleate nucleotidyltransferase, DNA-dependent RNA nucleotidyltransferase, DNA-dependent RNA polymerase, DNA-dependent RNA polymerase I, DNA-dependent RNA polymerase III, DNA-dependent RNA polymerases, DNA-dependent RNAP, more
nucleoside triphosphate + RNAn = diphosphate + RNAn+1
show the reaction diagram