ENTRY       EC 2.5.1.22
NAME        Spermine synthase
            Spermidine aminopropyltransferase
CLASS       Transferases
            Transferring alkyl or aryl groups, other than methyl groups
SYSNAME     S-Adenosylmethioninamine:spermidine 3-aminopropyltransferase
REACTION    S-Adenosylmethioninamine + Spermidine = 5'-Methylthioadenosine +
            Spermine
SUBSTRATE   S-Adenosylmethioninamine
            Spermidine
PRODUCT     5'-Methylthioadenosine
            Spermine
COMMENT     This enzyme is not identical with EC 2.5.1.16 or 2.5.1.23.
PATHWAY     PATH: MAP00220  Urea cycle and metabolism of amino groups
            PATH: MAP00330  Arginine and proline metabolism
            PATH: MAP00410  beta-Alanine metabolism
DBLINKS     University of Geneva ENZYME DATA BANK: 2.5.1.22
            WIT (What Is There) Metabolic Reconstruction: 2.5.1.22
///