Sphingomyelin - Revision history

130307013 at 16:30, 23 November 2014

2014-11-23T16:30:37Z

← Older revision		Revision as of 16:30, 23 November 2014
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	Sphingomyelin is a [[Phospholipids\|phospholipid]] present in cell membranes. It has a [[Hydrophilic\|hydrophilic]] (polar) head, and a [[Hydrophobic\|hydrophobic]] (nonpolar) tail - it is an amphilic molecule.<br>It is produced from [[~~sphingosine~~\|sphingosine]], as opposed to glycerol - the backbone of the main [[~~phospholipids~~\|phospholipids]], making is a sphingolipid.<br>Sphingosine is composed of a [[~~fatty acid chain~~\|fatty acid chain]] with two [[Hydroxyl group\|hydroxyl groups and]] an [[Amino group\|amino group]].<br>The [[~~fatty~~ acid\|fatty acid]] tail in sphingomyelin is attached to an amino group, and a phosphocholine group is attached to the terminal [[~~hydroxyl~~ group\|hydroxyl group]].<br>The structure of sphingomyelin leaves one free hydroxyl group on the [[~~molecule~~\|molecule]], which results in the [[Polar\|polar]] characteristics of the [[~~hydrophilic~~\|hydrophilic]] head. This means [[~~Hydrogen_bonds~~\|hydrogen bonds]] can form with nearby [[~~lipids~~\|lipids]], [[~~water~~\|water]] molecules or other membrane proteins <ref>B. Alberts, A. Johnson, J Lewis at al. (2008) Molecular Biology of the Cell, 5th Edition, New York: Garland Science. Chapter 10, pages 618-619</ref>.<br>		Sphingomyelin is a [[Phospholipids\|phospholipid]] present in cell membranes. It has a [[Hydrophilic\|hydrophilic]] (polar) head, and a [[Hydrophobic\|hydrophobic]] (nonpolar) tail - it is an amphilic molecule.<br>It is produced from [[Sphingosine\|sphingosine]], as opposed to glycerol - the backbone of the main [[Phospholipids\|phospholipids]], making is a sphingolipid.<br>Sphingosine is composed of a [[Fatty_acid\|fatty acid chain]] with two [[Hydroxyl group\|hydroxyl groups and]] an [[Amino group\|amino group]].<br>The [[Fatty acid\|fatty acid]] tail in sphingomyelin is attached to an amino group, and a phosphocholine group is attached to the terminal [[Hydroxyl group\|hydroxyl group]].<br>The structure of sphingomyelin leaves one free hydroxyl group on the [[Molecule\|molecule]], which results in the [[Polar\|polar]] characteristics of the [[Hydrophilic\|hydrophilic]] head. This means [[Hydrogen bonds\|hydrogen bonds]] can form with nearby [[Lipids\|lipids]], [[Water\|water]] molecules or other membrane proteins <ref>B. Alberts, A. Johnson, J Lewis at al. (2008) Molecular Biology of the Cell, 5th Edition, New York: Garland Science. Chapter 10, pages 618-619</ref>.<br>

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Nnjm2 at 18:51, 25 October 2012

2012-10-25T18:51:08Z

← Older revision		Revision as of 18:51, 25 October 2012
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	Sphingomyelin is a [[Phospholipids\|phospholipid]] present in cell membranes. It has a [[Hydrophilic\|hydrophilic]] (polar) head, and a [[Hydrophobic\|hydrophobic]] (nonpolar) tail - it is an amphilic molecule.<br>It is produced from sphingosine, as opposed to glycerol - the backbone of the main phospholipids, making is a sphingolipid.<br>Sphingosine is composed of a fatty acid chain with two [[~~Hydroxyl_group~~\|hydroxyl groups ]]~~and~~ an [[~~Amino_group~~\|amino group]].<br>The fatty acid tail in sphingomyelin is attached to an amino group, and a phosphocholine group is attached to the terminal hydroxyl group.<br>The structure of sphingomyelin leaves one free hydroxyl group on the molecule, which results in the [[Polar\|polar]] characteristics of the hydrophilic head. This means hydrogen bonds can form with nearby lipids, water molecules or other membrane proteins.<ref>B. Alberts, A. Johnson, J Lewis at al. (2008) Molecular Biology of the Cell, 5th Edition, New York: Garland Science. Chapter 10, pages 618-619</ref><br>		Sphingomyelin is a [[Phospholipids\|phospholipid]] present in cell membranes. It has a [[Hydrophilic\|hydrophilic]] (polar) head, and a [[Hydrophobic\|hydrophobic]] (nonpolar) tail - it is an amphilic molecule.<br>It is produced from [[sphingosine\|sphingosine]], as opposed to glycerol - the backbone of the main [[phospholipids\|phospholipids]], making is a sphingolipid.<br>Sphingosine is composed of a [[fatty acid chain\|fatty acid chain]] with two [[Hydroxyl group\|hydroxyl groups and]] an [[Amino group\|amino group]].<br>The [[fatty acid\|fatty acid]] tail in sphingomyelin is attached to an amino group, and a phosphocholine group is attached to the terminal [[hydroxyl group\|hydroxyl group]].<br>The structure of sphingomyelin leaves one free hydroxyl group on the [[molecule\|molecule]], which results in the [[Polar\|polar]] characteristics of the [[hydrophilic\|hydrophilic]] head. This means [[Hydrogen_bonds\|hydrogen bonds]] can form with nearby [[lipids\|lipids]], [[water\|water]] molecules or other membrane proteins <ref>B. Alberts, A. Johnson, J Lewis at al. (2008) Molecular Biology of the Cell, 5th Edition, New York: Garland Science. Chapter 10, pages 618-619</ref>.<br>

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Sphingomyelin is a [[Phospholipids|phospholipid]] present in cell membranes. It has a [[Hydrophilic|hydrophilic]] (polar) head, and a [[Hydrophobic|hydrophobic]] (nonpolar) tail - it is an amphilic molecule. It is produced from sphingosine, as opposed to glycerol - the backbone of the main phospholipids, making is a sphingolipid. Sphingosine is composed of a fatty acid chain with two [[Hydroxyl_group|hydroxyl groups ]]and an [[Amino_group|amino group]]. The fatty acid tail in sphingomyelin is attached to an amino group, and a phosphocholine group is attached to the terminal hydroxyl group. The structure of sphingomyelin leaves one free hydroxyl group on the molecule, which results in the [[Polar|polar]] characteristics of the hydrophilic head. This means hydrogen bonds can form with nearby lipids, water molecules or other membrane proteins.<ref>B. Alberts, A. Johnson, J Lewis at al. (2008) Molecular Biology of the Cell, 5th Edition, New York: Garland Science. Chapter 10, pages 618-619</ref> 

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