Spermine

**Definition:** A biogenic polyamine formed from spermidine. It is found in a wide variety of organisms and tissues and is an essential growth factor in some bacteria. It is found as a polycation at all pH values. Spermine is associated with nucleic acids, particularly in viruses, and is thought to stabilize the helical structure.

**Tree numbers:** - D02.092.211.415.701.801.821 - D02.092.782.802