Oleosin, a Bifunctional Enzyme is Phosphoregulated by a Protein Kinase

Abstract

In eukaryotic cells, lipids are indispensable principal components that vitiate biological life. Lipids are classified into two major groups, polar and non-polar lipids. Polar lipids are phospholipids, whereas non-polar lipids have broad classes such as sterols neutral storage lipids, sphingolipids and glycolipids. Lipids can further be classified into two major classes, functional lipids and non functional lipids. Functional lipids include phospholipids that form the biological membrane bilayer giving protection to the cell from various external stresses. Another molecule, the diacylglycerol acts as signaling molecule for various signal transduction pathways involved in gene expression or biological responses. Non-functional lipids, like triacylglycerol and steryl esters are stored lipids and are retrieved upon energy crisis conditions in eukaryotic cells