Aminoacylase 1 deficiency

Aminoacylase 1 deficiency
Other names	Neurological conditions associated with aminoacylase 1 deficiency
Aminoacylase 1 deficiency is inherited in an autosomal recessive manner

Aminoacylase 1 deficiency is a rare inborn error of metabolism. To date only 21 cases have been described.^[1][2]

The clinical picture is heterogeneous and includes motor delay, seizures, moderate to severe mental retardation, absent speech, growth delay, muscular hypotonia and autistic features.^{[citation needed]}

This disorder in inherited in an autosomal recessive fashion.^{[citation needed]}

Aminoacylase 1 (ACY1: EC 3.5.14) is a zinc binding enzyme which hydrolyzes N-acetyl amino acids into the free amino acid and acetic acid. Of the N-acetyl amino hydrolyzing enzymes, aminoacylase 1 is the most common.^{[citation needed]}

The ACY1 gene is located on the short arm of chromosome 3 (3p21.2).^{[citation needed]}

There is a specific pattern of N-acetyl amino acid excretion in the urine. The diagnosis can be confirmed by sequencing of the aminoacylase 1 gene.^{[citation needed]}

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This disorder was first reported in 2005.^[3]