Lipids Serve as Cellular Membrane Components

Basically, all of major polar lipid classes (e.g., PC, PE, PI, PS, PG, PA, SM, cerebro-side including both GalCer and GluCer, ST, gangliosides) are the components of cellular membranes. Although some of their metabolism intermediates such as lysoGPL, DAG, Cer, NEFA are also present in membrane structures, these intermediates are 

TABLE 16.1 Summary of the Major Functions of Individual Lipid Class Played  

Membrane stmctnral component Energy storage and metabolism Signaling 

AH lysoUpids, DAG, MAG, acyl CoA, acylcamitine, NEFA, eicosanoids and other oxidized FA, ceramide, sphingosine, SIP, psychosine, steroids, A-acyl ethanolamine, etc. 

Plasmalogen (antioxidant), acylcamitine (transport), CL (respiration), PS (cofactors, substrate of PE synthesis), etc. 

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