L-lysine does

not participate in

transamination. It is the

exception to the general rule

that the first step in

catabolism of an amino acid

is the removal of its alpha-

amino group by

transamination to form the

respective alpha-keto acid

To reduce toxic effect of some amino acid and convert to TCA intermediates for energy production. Transamination also help the ease of excretion.

aspartate (transamination) , malate (dehydrogenation) and pyruvate (carboxylation) .

transferred to a keto acid

Pyruvate