Multiple choice

What is the primary lipid of an insulating layer called myelin that forms around nerves?

  1. Galactocerebroside

  2. Sphingomyelin

  3. Sphingolipid

  4. Proteolipid

  5. MBP

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A Correct answer
Explanation

The primary lipid of myelin is a glycolipid called galactocerebroside. A galactocerebroside or galactosylceramide is a type of cerebroside consisting a ceramide with a galactose residue at the 1-hydroxyl moiety. Galactocerebroside is a marker for oligodendrocytes in the brain whether or not they form myelin.