Which 5 carbon intermediate of Krebs cycle would supply the carbon skeleton for synthesis of a 5C amino acid?

Alpha keto glutaric acid is a 5 carbon intermediate of Krebs cycle would supply the carbon skeleton for synthesis of a 5C amino acid. It can serve as a carbon source for the synthesis of various amino acids through transamination reactions. For a 5-carbon amino acid, such as glutamine, the carbon skeleton of alpha-ketoglutaric acid can be incorporated, with the amino group being transferred from an amino acid donor to form the desired amino acid.