NIPAL4
Gene
From Wikipedia, the free encyclopedia
Nipa‐Like Domain‐Containing 4, also known as NIPAL4 or Ichthyin, is a gene that is predicted to code for a transmembrane protein with nine transmembrane domains.[5] NIPAL4 codes for the protein magnesium transporter NIPA4, which acts as a Mg2+
transporter.
| NIPAL4 | |||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Aliases | NIPAL4, ARCI6, ICHTHYIN, ICHYN, NIPA like domain containing 4, SLC57A6 | ||||||||||||||||||||||||||||||||||||||||||||||||||
| External IDs | OMIM: 609383; MGI: 2444671; HomoloGene: 133769; GeneCards: NIPAL4; OMA:NIPAL4 - orthologs | ||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||
| Wikidata | |||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||
Expression
NIPAL4 is mainly expressed in the skin, specifically in the granular layer of the epidermis.[6]
Function
NIPAL4 codes for a magnesium transporter that can also transport other divalent cations such as Ba2+, Mn2+, Sr2+ and Co2+, though to a much less extent than Mg2+.[5] There is also evidence that NIPAL4 is involved in the synthesis of very long chain fatty acids involved in the epidermal lipid metabolism.[7] Disruptions to this pathway results in impaired skin function, causing the symptoms of ARCI.[8]
Pathology
Mutations in this gene account for 16% of autosomal recessive congenital ichthyosis (ARCI) cases, making it the 2nd most common gene involved with this disease.[9] Since its first identification in 2004, 18 disease‐causing mutations have been reported in NIPAL4.[8]