ALDH7A1 (Aldehyde Dehydrogenase 7 Family Member A1): ALDH7A1 is an enzyme that plays a role in aldehyde metabolism and is essential for detoxifying pyridoxal-5'-phosphate, a form of vitamin B6. Proper functioning of ALDH7A1 is crucial for normal lysine metabolism, and a deficiency in this enzyme can result in pyridoxine-dependent epilepsy, a condition where seizures respond to vitamin B6 treatment.