ALDH7A1 (Aldehyde Dehydrogenase 7 Family Member A1): ALDH7A1 is an enzyme involved in the metabolism of aldehydes and is essential for the detoxification of pyridoxal-5'-phosphate, a form of vitamin B6. Proper function of ALDH7A1 is critical for normal lysine metabolism, and deficiency in this enzyme can lead to pyridoxine-dependent epilepsy, a condition in which seizures are responsive to vitamin B6 treatment.