Identify basic structure of the 8 types of membrane proteins shown belowUnderstand how primary structure (e.g., regional hydrophobicity and hydrophilicity) allows proper membraneinteraction/association.• Compare/contrast the degree to which proteins are attached to membranes. Which have more lateralmovement? Diversity of attachment and lateral movement allows efficient function.• Understand where glycosylated lipids and proteins are found and what general functions they serve.Know the role/significance of cysteine disulfide bonds. On which side of the plasma membrane do they generallyoccur? Why?lipidbilayerwww8wwwLaAtwCYTOSOLCOOHNH₂!!!!!8Os6

According to the fluid mosaic model of the plasma membrane is a phospholipid bilayer that has…

Answered: Identify basic structure of the 8 types…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Similar questions

Compare/contrast extracellular matrix with basal lamina / basement membrane• What functions do they serve?• What structures do they form?• What are their major protein/sugar components?• What happens if the proteins/sugars fail to function?• Explain the role of matrix metalloproteases (MMPs) in extracellular matrix/basal membrane turnover
Describe the Fluid-Mosaic Model of membrane structure. Indicate the hydrophobic and hydrophilic regions of the membrane and give examples of various membrane proteins.
A2 Which of the following statements is NOT correct about the phospholipid molecules in the plasma membrane? * O The polar heads face outward The nonpolar tails face inward. O The polar heads are hydrophobic. O The nonpolar tails are hydrophobic. The phospholipids form a bilayer. This is a required question
Compare/contrast different types of cell junctions• Are they cell-to-cell or cell-to-extracellular matrix?• What are their general functions?• If they facilitate signaling, how do they do it?• What proteins form junctions? Are they attached to cytoskeletal proteins? If so, which?• How stable are they relative to one another?• What happens if these proteins don’t function properly (i.e., if cell junctions break down)?
What happens if plasma membrane fails to maintain optimal fluidity?• Describe structure/function of lipid rafts
The fluid mosaic model of membrane structure has been very useful in explaining membrane behavior. However, the description of membrane as proteins floating in a phospholipid sea is oversimplified. Describe some components of membrane that are restricted in their lateral motion.
Which of the following is not a lipid link that anchors membrane-associated proteins to the bilayer? Thioether-linked prenyl anchors. Ester-linked triacylglycerol anchors. Glycosyl phosphatidylinositol anchors. Thioester-linked fatty acyl anchors. Amide-linked myristoyl anchors.
Peripheral membrane proteins O may noncovalently interact with phospholipid heads O contain many hydrophobic amino acid residues if found on the cytosolic leaflet but contain hydrophilic residues if found on the extracellular leaflet O contain only alpha helical membrane spanning domains O have covalently attached lipid or fatty acid anchors All of the other are true
Discuss how integral membrane proteins affect and impact on membrane fludiity and dynamics.
account_circle Science Anatomy and PhysiologyQ&A LibraryWhich of the following statements regarding the selective permeability of the lipid bilayer is FALSE? A. the permeability of the lipid bilayer to different substances varies. B. The lipid bilayer component of the plasma membrane is highly permeable to nonvolatile molecules such as oxygen. C. The more hydrophobic or lipid soluble a substance is, the greater the lipid bilayers permeability to that substance. D. The lipid bilayer component of the plasma membrane is moderately permeable to ions and large, uncharged polar molecules Which of the following statements regarding the selective permeability of the lipid bilayer is FALSE? A. the permeability of the lipid bilayer to different substances varies. B. The lipid bilayer component of the plasma membrane is highly permeable to nonvolatile molecules such as oxygen. C. The more hydrophobic or lipid soluble a substance is, the greater the lipid bilayers…
Why the composition of biological membrane varies ? Should it be helpful in membrane physiology ?
Two theories of membrane structure are discussed below. Unit Membrane Model Phospholipid molecules are the most abundant type of lipids in cell membranes. Each consists of a nonpolar, hydrophobic tail, and a polar, hydrophilic head. The phospholipid chains orient themselves to form a bilayer with the tails pointed inward and the hydrophilic heads lined up on both sides of the bilayer. An extended monomolecular layer of protein coats both the outside of the membrane and the inside of the bilayer, but the protein does not penetrate the bilayer. When thin slices of membranes were examined with an electron microscope, three layers were seen: two electron-dense layers, with one wider layer between them. It was believed that the electron-dense layers represented proteins, and the lighter area represented lipids. Fluid Mosaic Model The structure of the fluid mosaic membrane is a bilayer of phospholipid molecules with proteins inserted into the bilayer. Hydrophilic regions of both the lipids…

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