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Chapter 9: 4P (page 290)

Name this lipid.

Short Answer

Expert verified

The given lipid structure is 1-myristoyl-2-palmitoleoyl-3-phosphatidylserine.

Step by step solution

01

Introduction

In the human body, lipids perform a crucial role. It helps to generate hormones while also providing energy. Lipids are divided into three groups: triglycerides, steroids, and phospholipids.

02

Phosphatidylserine

The phospholipid phosphatidylserine is a kind of phospholipid. The ester connection to glycerol's first and second carbon atoms is linked using two fatty acid chains. A phosphodiester linkage connects the serine group to the glycerol's third carbon atom. Fatty acid tails linked to the phospholipid include myristoyl and palmitoleoyl. Lipid bilayers contain them. Phosphatidylserine is an essential component of cell cycle signaling.

For healthy nerve cell membranes and myelin, phosphatidylserine is necessary. Neurotransmission is impaired due to biochemical changes and structural degeneration as the human brain ages.

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Most popular questions from this chapter

In order to consume and dispose of dying cells, macrophages (amoebalike white blood cells) recognize phosphatidylserine (PS) on the outer surface of the target cell. Why is PS a useful marker of a moribund cell?

Question: MORE TO EXPLORE Some of the more unusual membrane lipids occur in prokaryotes. For example, archaeal membranes are not built from glycerophospholipids. What lipids are used, and how do their physical properties affect archaeal membranes? How would you describe the structure of the lipopolysaccharides that occur in gram-negative bacteria? Why are these molecules also known as endotoxins? A certain group of bacteria synthesize unusual lipids called ladderanes. How do these molecules help the bacteria perform their specialized metabolic functions?

The symmetries of oligomeric integral proteins are constrained by the requirement that their subunits must all have the same orientation with respect to the plane of the membrane. What symmetries can these proteins have? Explain. (Protein symmetry is discussed in Section 6-3.)

Question: E. coli outer membranes include a component known as Lipid A, shown here. Identify its saccharide and fatty acid constituents.

Brief Exercises Brief, online bioinformatics homework exercises can be found in WileyPLUS Learning Space.

Exercise 1 Drawing and Naming Fatty Acids

Exercise 2 Introduction to Lipidomics

Exercise 3 Properties of Membrane Proteins
See all solutions

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