| Primary Identifier | IPR039180 | Type | Family |
| Short Name | PNPLA1 |
| description | Members of this family share a patatin domain, initially discovered in potato tubers, and are known as patatin-like phospholipase domain containing proteins (PNPLA). They serve critical roles in diverse aspects of lipid metabolism and signaling. Some PNPLA1 proteins do not have the lipase consensus sequence Gly-X-Ser-X-Gly which is essential for hydrolase activity. This entry includes PNPLA1 from Homo sapiens and Gallus gallus. It is expressed in various human tissues in low mRNA levels [, ].In humans PNPLA1 has a role in the formation of the epidermal lipid barrier; mutations in this gene are associated with the skin disorder known as ichthyosis []. PNPLA1 acts as an omega-hydroxyceramide transacylase involved in the synthesis of omega-O-acylceramides (esterified omega-hydroxyacyl-sphingosine; EOS), which are extremely hydrophobic lipids involved in skin barrier formation [, ]. It catalyzes the last step of the synthesis of omega-O-acylceramides by transferring linoleic acid from triglycerides to an omega-hydroxyceramid []. |
