Lipids and Biomembranes

ID #2190

In one of the slides from lecture 8, Prof Mehrtens gave the definition of a Phospholipid as Glycerol + 2 fatty acids + Phosphate group; however, in another slide from the same lecture, sphingomyelin, which doesn't have a glycerol backbone is also being listed as Phospholipid. Do these 2 slides contradict each other?

Nope, there is no contradicting in Prof Mehrten's lectures. He was very clear in lecture when discussing sphingomyelin and its serine backbone. Sphingomyelin is classified as a phospholipid because of the phosphate group attached to one of the carbons in its serine backbone. It is an exception to the norm, but a common one. 

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