What is the first reaction in the catabolism of most amino acids?

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The first reaction in the catabolism of most amino acids is transamination, which involves the transfer of an amino group from the amino acid to an alpha-keto acid, resulting in the formation of a new amino acid and a new alpha-keto acid. This reaction is catalyzed by aminotransferases, also known as transaminases. Decarboxylation, phosphorylation, aldolation, and ligation are not typically involved in the first step of amino acid catabolism.

What Is the First Reaction in the Catabolism of Most