?:definition
|
-
Catalysis of the reaction: nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1). Utilizes a DNA template that contains a single-subunit-type RNA polymerase-specific promoter to direct initiation and 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\'. [GOC:txnOH]
|