SP6 RNA Polymerase is a DNA-dependent RNA polymerase that exhibits a high specificity for bacteriophage SP6 promoter sequences. The enzyme can incorporate labeled or unlabeled nucleotide triphosphates into an RNA transcript. Large quantities of RNA can be synthesized from a DNA sequence cloned downstream from an SP6 promoter. SP6 RNA Polymerase is supplied in 10 mM potassium phosphate (pH 7.9), 150mM NaCl, 1 mM DTT, 0.1 mM EDTA and 50% glycerol.