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Aminoacylase 1 is a zinc-binding enzyme which hydrolyzes N-acetyl amino acids into the free amino acid and acetic acid. Deficiency of aminoacylase 1 due to mutations in the aminoacylase 1 (ACY1) gene follows an autosomal-recessive trait of inheritance and is characterized by accumulation of N-acetyl amino acids in the urine. In affected individuals neurological findings such as febrile seizures, delay...