label: spermine transmembrane transporter activity
label_lc: spermine transmembrane transporter activity
description: "Enables the transfer of spermine from one side of a membrane to the other. Spermine is a polybasic amine found in human sperm, in ribosomes and in some viruses, which is involved in nucleic acid packaging. Synthesis is regulated by ornithine decarboxylase which plays a key role in control of DNA replication."