The first step in amino acid catabolism is

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The first step in amino acid catabolism is typically transamination, which involves the transfer of an amino group from the amino acid to a keto acid, forming a new amino acid and a new keto acid. This process enables the amino group to be used for the synthesis of new amino acids or other nitrogen-containing compounds, while the carbon skeleton of the original amino acid can be broken down further for energy production. Decarboxylation, oxidation, esterification, and tautomerization may also be involved in amino acid catabolism, but they typically occur after transamination.

The First Step in Amino Acid Catabolism Is