這個基因編碼一種與lon蛋白酶蛋白家族相關的蛋白質。在嚙齒動物和其他哺乳動物中，這種基因產物存在于含有鈣通道膜蛋白的細胞質中，被認為在大腦發育中起作用。該基因突變與常染色體隱性非綜合征性精神發育遲滯有關。已發現編碼該基因不同亞型的多種轉錄變體。
This gene encodes a protein related to the Lon protease protein family. In rodents and other mammals this gene product is found in the cytoplasm localized with a calcium channel membrane protein, and is thought to play a role in brain development. Mutations in this gene are associated with autosomal recessive nonsyndromic mental retardation. Multiple transcript variants encoding different isoforms have been found for this gene.