Polyamine biosynthesis pathway enzyme

The polyamine biosynthesis pathway enzymes catalyze the multi-step conversion of amino acids (primarily arginine, ornithine, and methionine) into essential polyamines—putrescine, spermidine, and spermine—which are vital for cell proliferation, growth, differentiation, and survival across diverse biological kingdoms[2][3][4][5][6]. These enzymes are tightly regulated and comprise key metabolic checkpoints (notably ornithine decarboxylase and S-adenosylmethionine decarboxylase)[2][4][5][6]. Hyperactivation of this pathway is associated with oncogenesis, while its inhibition is a proven anticancer strategy currently under clinical investigation[2][4][5][6]. Polyamine biosynthetic enzymes are also implicated in inflammation, cardiovascular disease, neurodegeneration, and infection[1][2][4][5][6]. Therapeutic agents target these enzymes to arrest cell growth, induce apoptosis, and modulate disease progression[2][5].

Other names

Polyamine metabolic enzymesPolyamine biosynthetic enzymes

Enzyme inhibition (downregulates polyamine synthesis by blocking individual biosynthetic enzymes such as ODC and AdoMetDC) Depletion of intracellular polyamine pools (results in suppressed cell proliferation and induction of cell death in tumor cells)