The structures of different sphingomyelins have to be given. Concept Introduction: Sphingolipids: It is the major lipid components in the myelin sheaths of nerve fibers. An amino alcohol called sphingosine instead of glycerol forms the sphingolipids. The two main classifications of sphingolipids are sphingomyelins and cerebrosides. Sphingomyelin and cerebroside: The primary OH group of sphingosine is bonded to phosphocholine or phosphoethanolamine in sphingomyelin. The primary OH group of sphingosine is bonded to a sugar residue through a β -glycosidic linkage in cerebroside.

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Chapter 20.4, Problem 9P

a)

Interpretation Introduction

Interpretation:

The structures of different sphingomyelins have to be given.

Concept Introduction:

Sphingolipids:

It is the major lipid components in the myelin sheaths of nerve fibers.

An amino alcohol called sphingosine instead of glycerol forms the sphingolipids.

The two main classifications of sphingolipids are sphingomyelins and cerebrosides.

Sphingomyelin and cerebroside:

The primary OH group of sphingosine is bonded to phosphocholine or phosphoethanolamine in sphingomyelin.

The primary OH group of sphingosine is bonded to a sugar residue through a β-glycosidic linkage in cerebroside.

b)

Interpretation Introduction

Interpretation:

The structure of galactocerebroside has to be given.

Concept Introduction:

Sphingolipids:

It is the major lipid components in the myelin sheaths of nerve fibers.

An amino alcohol called sphingosine instead of glycerol forms the sphingolipids.

The two main classifications of sphingolipids are sphingomyelins and cerebrosides.

Sphingomyelin and cerebroside:

The primary OH group of sphingosine is bonded to phosphocholine or phosphoethanolamine in sphingomyelin.

The primary OH group of sphingosine is bonded to a sugar residue through a β-glycosidic linkage in cerebroside.

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