Why lysine and threonine doesn't undergo transamination?

Explanation:

Because for two substances to undergo a transamination reaction one must be an alpha amino acid, which Lysine is (it also contains a free amino group in its side chain). Proline is not an alpha keto acid, it is an amino acid which comprises its alpha amino group in a cyclic form (it is a pyrrolidine ring).

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if you mean hydrogen and oxygen then water is the product

that's what i got you can count the number of atoms