Exchangeable apolipoproteins constitute a functionally important family of proteins that play critical roles in lipid transport and lipoprotein metabolism.

Apolipophorin III (apoLp-III) is a prototypical exchangeable apolipoprotein found in many insect species that functions in transport of diacylglycerol (DAG) from the fat body lipid storage depot to flight muscles in the adult life stage.

[1] High-density lipophorin is characterized by its association with a lower proportion of lipid.

It interacts with more lipid and stabilize by Apolipophorin III to form low-density lipophorin.

This transformation occurs through tightly regulated and precisely timed processes.