Human Adiponutrin (ADPN) is a 53 kD adipokine protein belong to the PNPLA family of phospholipase A2 enzymes. The 481 amino acid human Adiponutrin is a type II transmembrane protein, consisting of the patatin domain (aa 10 - 179) with enzyme activity and a transmembrane segment (aa 42 - 62). Human and mouse adiponutrins share 61% homology in amino acid sequence.

Adiponutrin is mainly expressed in adipocytes and serves as a triacylglycerol lipase that mediates triacylglycerol hydrolysis in adipocytes. Reports have shown that Adiponutrin plays an important role in the balance of energy usage/storage in adipocytes. Its expression level is enhanced in response to insulin.

Studies by Dr Clement's group have shown that in obese subjects, short- or long-term calorie restriction diets were associated with a reduction in Adiponutrin gene expression. Adiponutrin mRNA level was previously shown to be negatively correlated with fasting glucose plasma levels and associated with insulin sensitivity of non-diabetic obese and non-obese subjects. Reports from the same group have also shown a strong relationship between Adiponutrin expression, insulin sensitivity and glucose metabolism in human adipose tissue.

Other names for Adiponutrin include PNPLA3 (patatin-like phospholipase domain-containing protein 3).

RayBio^® Adiponutrin EIA kit targets the common sequence of human, mouse, and rat. This kit may be used to detect Adiponutrin expression in all these species with high specificity and sensitivity.

Standard, Biotinylated Adiponutrin peptide, and Positive Control should be stored at -20°C after arrival. Avoid multiple freeze-thaws. The remaining kit components may be stored at 4°C. Opened Microplate Wells and antibody (Item N) may be stored for up to 1 month at 2° to 8°C. Return unused wells to the pouch containing desiccant pack and reseal along entire edge.