Spermidine belongs to the natural polyamines, that are found in chloroplasts and in bacterial or eukaryotic cells.
Spermidine has been used in the preparation of gold beads and as a component in nuclei isolation buffer (NIB).
Spermidine is suitable for use in molecular biology buffers and for precipitation of DNA >100 bp in length. It was used to deliver DNA in plants and mammalian cells by particle bombardment technique.
Inhibits neuronal nitric oxide synthase (nNOS). Binds and precipitates DNA; may be used for purification of DNA binding proteins. Stimulates T4 polynucleotide kinase activity.
Spermidine helps to maintain the proper activity of gene expression. This polyamine plays a key role in intermediate metabolism. It also serves as an inhibitor of the acetyl transferase activity of E1A-associated protein p300 (EP300). Spermidine participates in cell growth.
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.