Description_x000D_ General description_x000D_ The enzyme nitric oxide synthase (nNOS) is involved in the production of nitric oxide._x000D_ Application_x000D_ Spermidine has been used:_x000D_ • in the preparation of 5x transcription buffer_x000D_ • in the treatment of double-stranded RNA along with other reagents to increase the uptake of dsRNA by nematodes_x000D_ • as a standard in the analytical study of rat brain polyamines (185)_x000D_ Packaging_x000D_ 1, 5, 25 g in glass bottle_x000D_ Biochem/physiol Actions_x000D_ Inhibits neuronal nitric oxide synthase (nNOS). Binds and precipitates DNA; may be used for purification of DNA binding proteins. Stimulates T4 polynucleotide kinase activity._x000D_ Caution_x000D_ Solutions should be sterile-filtered, not autoclaved, if sterile solution is necessary. Spermidine deaminates with time; solutions should be stored frozen. Prepare new solutions frequently._x000D_ Other Notes_x000D_ Store under inert gas. Air sensitive; strongly hygroscopic.