ID   2.5.1.16
DE   spermidine synthase.
AN   aminopropyltransferase.
AN   putrescine aminopropyltransferase.
CA   putrescine + S-adenosyl 3-(methylsulfanyl)propylamine = H(+) + S-methyl-
CA   5'-thioadenosine + spermidine.
CC   -!- The enzymes from the plant Glycine max and from mammalia are highly
CC       specific for putrescine as the amine acceptor.
CC   -!- The enzymes from the bacteria Escherichia coli and Thermotoga
CC       maritima prefer putrescine but are more tolerant toward other amine
CC       acceptors, such as spermidine and cadaverine. cf. EC 2.5.1.22 and
CC       EC 2.5.1.23.
DR   O82147, SPDE_COFAR ;  O48660, SPDE_NICSY ;  Q9ZS45, SPDE_SOLLC ;
DR   Q9ZUB3, SPDS1_ARATH;  Q96556, SPDS1_DATST;  O48658, SPDS1_HYONI;
DR   Q9SMB1, SPDS1_ORYSJ;  Q9ZTR1, SPDS1_PEA  ;  O48661, SPDS2_ARATH;
DR   Q96557, SPDS2_DATST;  O48659, SPDS2_HYONI;  Q9ZTR0, SPDS2_PEA  ;
DR   O66473, SPEE1_AQUAE;  Q81JT0, SPEE1_BACAN;  Q814Q1, SPEE1_BACCR;
DR   Q8RA94, SPEE1_CALS4;  Q8EZP1, SPEE1_LEPIN;  Q9X6R0, SPEE1_PSEAE;
DR   Q8XQC8, SPEE1_RALN1;  Q9L091, SPEE1_STRCO;  O67365, SPEE2_AQUAE;
DR   Q81X05, SPEE2_BACAN;  Q815E8, SPEE2_BACCR;  Q8R977, SPEE2_CALS4;
DR   Q8EXA3, SPEE2_LEPIN;  Q9HV34, SPEE2_PSEAE;  Q8XQC5, SPEE2_RALN1;
DR   Q9X8S2, SPEE2_STRCO;  A3DDA0, SPEE_ACET2 ;  Q9YE02, SPEE_AERPE ;
DR   C4ZDU4, SPEE_AGARV ;  Q0ACK7, SPEE_ALKEH ;  A6TRI3, SPEE_ALKMQ ;
DR   A8MLM9, SPEE_ALKOO ;  O27950, SPEE_ARCFU ;  Q72X78, SPEE_BACC1 ;
DR   A7GVB2, SPEE_BACCN ;  A9VSG3, SPEE_BACMK ;  P70998, SPEE_BACSU ;
DR   Q8G4L4, SPEE_BIFLO ;  B8D908, SPEE_BUCA5 ;  P57305, SPEE_BUCAI ;
DR   Q8K9T5, SPEE_BUCAP ;  B8D7B3, SPEE_BUCAT ;  B9MRW0, SPEE_CALBD ;
DR   A4XKM9, SPEE_CALS8 ;  Q7NQK7, SPEE_CHRVO ;  A8ALG8, SPEE_CITK8 ;
DR   Q97FX3, SPEE_CLOAB ;  A6M1N9, SPEE_CLOB8 ;  B2V328, SPEE_CLOBA ;
DR   B2TMY2, SPEE_CLOBB ;  Q18A85, SPEE_CLOD6 ;  B9E5S1, SPEE_CLOK1 ;
DR   A5N219, SPEE_CLOK5 ;  Q0TTQ7, SPEE_CLOP1 ;  Q8XMY8, SPEE_CLOPE ;
DR   Q0SVK7, SPEE_CLOPS ;  Q891W4, SPEE_CLOTE ;  Q8FMF7, SPEE_COREF ;
DR   B1I5Z0, SPEE_DESAP ;  Q9XY92, SPEE_DICDI ;  A7ZHL0, SPEE_ECO24 ;
DR   B7UIG9, SPEE_ECO27 ;  B7MBA4, SPEE_ECO45 ;  B7LFY8, SPEE_ECO55 ;
DR   P66834, SPEE_ECO57 ;  B5YZF6, SPEE_ECO5E ;  B7NI81, SPEE_ECO7I ;
DR   B7MNY3, SPEE_ECO81 ;  B7M162, SPEE_ECO8A ;  C4ZRL4, SPEE_ECOBW ;
DR   B1XC96, SPEE_ECODH ;  A7ZW70, SPEE_ECOHS ;  A1A7G7, SPEE_ECOK1 ;
DR   Q0TLL3, SPEE_ECOL5 ;  P66833, SPEE_ECOL6 ;  B1IQL9, SPEE_ECOLC ;
DR   P09158, SPEE_ECOLI ;  B7N7Z1, SPEE_ECOLU ;  B6HZ96, SPEE_ECOSE ;
DR   B1LGS2, SPEE_ECOSM ;  Q1RG70, SPEE_ECOUT ;  A4W6M6, SPEE_ENT38 ;
DR   B2VD21, SPEE_ERWT9 ;  B7LVY5, SPEE_ESCF3 ;  Q9K6B8, SPEE_HALH5 ;
DR   A1WZR2, SPEE_HALHL ;  C4K3X3, SPEE_HAMD5 ;  Q17WL9, SPEE_HELAH ;
DR   B6JM63, SPEE_HELP2 ;  B5Z7J7, SPEE_HELPG ;  Q1CT37, SPEE_HELPH ;
DR   Q9ZL11, SPEE_HELPJ ;  B2USZ6, SPEE_HELPS ;  O25503, SPEE_HELPY ;
DR   P19623, SPEE_HUMAN ;  B4U8W2, SPEE_HYDS0 ;  B5Y1R1, SPEE_KLEP3 ;
DR   A6T4R6, SPEE_KLEP7 ;  B1L5H2, SPEE_KORCO ;  C4Z1Q7, SPEE_LACE2 ;
DR   A9KQ99, SPEE_LACP7 ;  B0SI93, SPEE_LEPBA ;  B0STV8, SPEE_LEPBP ;
DR   Q72V65, SPEE_LEPIC ;  Q606H1, SPEE_METCA ;  Q57761, SPEE_METJA ;
DR   Q2RHH3, SPEE_MOOTA ;  Q64674, SPEE_MOUSE ;  Q7TY95, SPEE_MYCBO ;
DR   P9WGE4, SPEE_MYCTO ;  P9WGE5, SPEE_MYCTU ;  P60593, SPEE_NEIMA ;
DR   P60594, SPEE_NEIMB ;  Q9Y8H7, SPEE_NEUCR ;  Q82XD4, SPEE_NITEU ;
DR   Q3JDL8, SPEE_NITOC ;  Q8CV14, SPEE_OCEIH ;  Q7U3L0, SPEE_PARMW ;
DR   Q6D1W4, SPEE_PECAS ;  C6DC58, SPEE_PECCP ;  Q7N892, SPEE_PHOLL ;
DR   Q6L1F4, SPEE_PICTO ;  A3PFH4, SPEE_PROM0 ;  A2C5F4, SPEE_PROM1 ;
DR   A8G7J0, SPEE_PROM2 ;  A2CDX0, SPEE_PROM3 ;  A2BZ72, SPEE_PROM5 ;
DR   Q317V6, SPEE_PROM9 ;  Q7V9I5, SPEE_PROMA ;  Q7V3X3, SPEE_PROMM ;
DR   Q7UZI0, SPEE_PROMP ;  A2BTR7, SPEE_PROMS ;  Q46IA2, SPEE_PROMT ;
DR   Q884N3, SPEE_PSESM ;  Q9V277, SPEE_PYRAB ;  A4WHN0, SPEE_PYRAR ;
DR   A3MU81, SPEE_PYRCJ ;  Q8U4G1, SPEE_PYRFU ;  O57950, SPEE_PYRHO ;
DR   A1RU43, SPEE_PYRIL ;  B1YB61, SPEE_PYRNV ;  Q7UWD1, SPEE_RHOBA ;
DR   Q1GGU4, SPEE_RUEST ;  Q9UXE4, SPEE_SACS2 ;  B5F815, SPEE_SALA4 ;
DR   A9MPN3, SPEE_SALAR ;  Q57T89, SPEE_SALCH ;  B5FIB4, SPEE_SALDC ;
DR   B5R2R5, SPEE_SALEP ;  B5RHA5, SPEE_SALG2 ;  B4TJD2, SPEE_SALHS ;
DR   B4SU91, SPEE_SALNS ;  Q5PDA0, SPEE_SALPA ;  A9MZR2, SPEE_SALPB ;
DR   C0Q5M7, SPEE_SALPC ;  B5BL97, SPEE_SALPK ;  B4TXL7, SPEE_SALSV ;
DR   Q8Z9E2, SPEE_SALTI ;  Q8ZRS3, SPEE_SALTY ;  Q09741, SPEE_SCHPO ;
DR   A8GJ06, SPEE_SERP5 ;  Q8EAX8, SPEE_SHEON ;  B2U2X0, SPEE_SHIB3 ;
DR   Q326B5, SPEE_SHIBS ;  Q32K90, SPEE_SHIDS ;  Q0T879, SPEE_SHIF8 ;
DR   Q83MF0, SPEE_SHIFL ;  Q3Z5N9, SPEE_SHISS ;  Q5WB31, SPEE_SHOC1 ;
DR   Q2NVS1, SPEE_SODGM ;  Q82EU4, SPEE_STRAW ;  B4SM23, SPEE_STRM5 ;
DR   B2FKR1, SPEE_STRMK ;  P66835, SPEE_STRPN ;  P66836, SPEE_STRR6 ;
DR   B9DUY3, SPEE_STRU0 ;  Q4JAZ8, SPEE_SULAC ;  C3N5P4, SPEE_SULIA ;
DR   C4KHC0, SPEE_SULIK ;  C3MQ26, SPEE_SULIL ;  C3MVE5, SPEE_SULIM ;
DR   C3NHE1, SPEE_SULIN ;  C3NEA8, SPEE_SULIY ;  Q975S5, SPEE_SULTO ;
DR   Q31QK9, SPEE_SYNE7 ;  Q2JQS1, SPEE_SYNJA ;  Q2JQ57, SPEE_SYNJB ;
DR   Q5N3N4, SPEE_SYNP6 ;  Q0I685, SPEE_SYNS3 ;  Q9HL75, SPEE_THEAC ;
DR   Q5JFG9, SPEE_THEKO ;  Q9WZC2, SPEE_THEMA ;  B9KAY3, SPEE_THENN ;
DR   B6YXJ9, SPEE_THEON ;  A5IJD3, SPEE_THEP1 ;  B0K9I5, SPEE_THEP3 ;
DR   B0K172, SPEE_THEPX ;  Q72K55, SPEE_THET2 ;  Q97BN7, SPEE_THEVO ;
DR   B8GQ45, SPEE_THISH ;  Q8D3Q3, SPEE_VIBVU ;  Q7MF74, SPEE_VIBVY ;
DR   Q7M7Q6, SPEE_WOLSU ;  Q8PFQ4, SPEE_XANAC ;  Q3BN93, SPEE_XANC5 ;
DR   Q4UPN0, SPEE_XANC8 ;  B0RXN7, SPEE_XANCB ;  Q8P447, SPEE_XANCP ;
DR   Q2P928, SPEE_XANOM ;  B2SHF6, SPEE_XANOP ;  Q5H6E7, SPEE_XANOR ;
DR   B2I6M0, SPEE_XYLF2 ;  Q9PH03, SPEE_XYLFA ;  B0U1H5, SPEE_XYLFM ;
DR   Q87F26, SPEE_XYLFT ;  Q12074, SPEE_YEAST ;  A1JJM8, SPEE_YERE8 ;
DR   A7FM33, SPEE_YERP3 ;  Q1C3U7, SPEE_YERPA ;  B2K4I2, SPEE_YERPB ;
DR   Q8ZBJ8, SPEE_YERPE ;  A9R1H4, SPEE_YERPG ;  Q1CLX1, SPEE_YERPN ;
DR   A4TPU4, SPEE_YERPP ;  Q66EH3, SPEE_YERPS ;  B1JK45, SPEE_YERPY ;
//