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speB | Agmatinase; Catalyzes the formation of putrescine from agmatine. Belongs to the arginase family. Agmatinase subfamily. (306 aa) | ||||
speA | Arginine decarboxylase; Catalyzes the biosynthesis of agmatine from arginine. (658 aa) | ||||
speE | Spermidine synthase; Catalyzes the irreversible transfer of a propylamine group from the amino donor S-adenosylmethioninamine (decarboxy-AdoMet) to putrescine (1,4-diaminobutane) to yield spermidine. (286 aa) | ||||
speD | S-adenosylmethionine decarboxylase, proenzyme; 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; Belongs to the prokaryotic AdoMetDC family. Type 2 subfamily. (264 aa) |