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ENZYME entry: EC

Accepted Name
Methionine transaminase.
Alternative Name(s)
Methionine-oxo-acid transaminase.
Reaction catalysed
L-methionine + a 2-oxo acid <=> 2-oxo-4-methylthiobutanoate + an L-amino acid
  • The enzyme is most active with L-methionine.
  • It participates in the L-methionine salvage pathway from S-methyl- 5'-thioadenosine, a by-product of polyamine biosynthesis.
  • The enzyme from the bacterium Klebsiella pneumoniae can use several different amino acids as amino donor, with aromatic amino acids being the most effective.
  • The enzyme from the plant Arabidopsis thaliana is also a part of the chain elongation pathway in the biosynthesis of methionine-derived glucosinolates.
PRIAM enzyme-specific profiles2.6.1.88
KEGG Ligand Database for Enzyme Nomenclature2.6.1.88
IUBMB Enzyme Nomenclature2.6.1.88
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