spermine + S-adenosyl 3-(methylsulfanyl)propylamine = N(4)-aminopropylspermine + S-methyl-5'-thioadenosine + H(+)
spermine + s-adenosyl 3-(methylsulfanyl)propylamine = n(4)-aminopropylspermine + s-methyl-5'-thioadenosine + h(+)
spermine + S-adenosyl 3-(methylsulfanyl)propylamine = N(4)-aminopropylspermine + S-methyl-5'-thioadenosine + H(+)
spermine + s-adenosyl 3-(methylsulfanyl)propylamine = n(4)-aminopropylspermine + s-methyl-5'-thioadenosine + h(+)