S-adenosylmethionine decarboxylase proenzyme S-adenosylmethionine decarboxylase beta chain PA14_63110 MAIQPLRLDPITVLGKQLVIELFDCVDQRFDDIQWIEESMLEAARQANATIITSAFHKFSPIGISGVVVIAESHLAIHTWPEYGYAAVDVFTCGDVLDGAQAVRVLSERLGSRRHLISSMDRGLGGHRLGLLSRSLAGNGPVDEDSPTLRWALGQGTGVA 160 speH Catalyzes the decarboxylation of S-adenosylmethionine to S-adenosylmethioninamine (dcAdoMet), the propylamine donor required for the synthesis of the polyamines spermine and spermidine from the diamine putrescine (By similarity). SPEH_PSEAB S-adenosylmethionine decarboxylase alpha chain