A new pathway for the biosynthesis of spermidine.
D000693:Anaerobiosis; D001120:Arginine / Q000378:metabolism; D001224:Aspartic Acid / Q000378:metabolism; D005650:Fumarates / Q000378:metabolism; D008027:Light; D008715:Methionine / Q000378:metabolism; D009952:Ornithine / Q000378:metabolism; D010231:Paracoccus denitrificans / Q000378:metabolism*; D011700:Putrescine / Q000378:metabolism; D012242:Rhodobacter sphaeroides / Q000378:metabolism*; D013095:Spermidine / Q000096:biosynthesis*
D005650:Fumarates; D001224:Aspartic Acid; D001120:Arginine; D008715:Methionine; D009952:Ornithine; D013095:Spermidine; D011700:Putrescine