Which of the following is/are incorrect about the differences between globular and membrane proteins?1. Membrane proteins are embedded in a lipid environment while globular proteins are solvated by water.2. The surface of membrane proteins are likely to feature amino acid residues with hydrophobic side chains.3. Globular proteins, because of their environment, do not have amino acid residues with hydrophobic side chains.4. No membrane protein has any portions that are exposed to water.O 2 and 3O 1O 3O 4O 3 and 4

Proteins are the heteropolymers of amino acids attached together via peptide bonds. Proteins play…

Answered: Which of the following is/are incorrect…

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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Choose the best answer 1) If the lipid bilayer in Section B represents the plasma membrane, which part of the protein is the cytoplasmic domain? There is no way to tell which is the cytoplasmic domain with the information given. Section A is the cytoplasmic domain since it contains disulfide bonds. Section C is the cytoplasmic domain since the N-terminus is always found in the cytoplasm. Section C is the cytoplasmic domain since glycosylation cannot occur on the cytoplasmic domain. Section B is the cytoplasmic domain since it is an alpha-helix. 2) Which type of amino acids is most commonly found in Section B? Hydrophilic Hydrophobic There is no way of knowing which type of amino acids is most commonly found in Section B with the given information Charged 3) If the lipid bilayer in Section B represents the ER membrane, which part of the protein is found INSIDE the ER (in the ER lumen)? The entire protein must be inside the lumen of the ER. Section C is inside the ER…
1. Theoretically, a protein could assume a virtually infinite number of configurations and conformations. Suggestseveral features of proteins that drastically limit the actual number. 2. What are the greatest structural features that differentiate sphingolipids from phosphoglycerides? 3. High levels of glucose-6-phosphate inhibit glycolysis. If the concentration of glucose-6-phosphate decreases,activity is restored. Why?
Lipid rafts are microdomains in the plasma membrane that function as a stable platform for signaling and trafficking. Which of the following helps make the lipid rafts more stable and less mobile? phospholipid cholesterol sphingolipid a and b b and c
A transmembrane protein has the following properties: it has two binding sites, one for solute A and one for solute b. The protein can undergo a conformational change to switch between two states: either both binding sites are exposed exclusively on one side of the membrane or both binding sites are exposed exclusively on the other side of the membrane. The protein can switch between the two conformational states only if both binding sites are occupied or if both binding sites are empty, but cannot switch if only one binding site is occupied. What kind of protein do these properties define?
Which of these structures would you expect to find as part of the transmembrane portion of an integral membrane protein? Structure B would be part of the transmembrane domain of an integral membrane protein. Structure C would be part of the transmembrane domain of an integral membrane protein. Structure A would be part of the transmembrane domain of an integral membrane protein.
Mutations of Lysine to Alanine residues near the membrane water interface disrupts binding to the lipids. Which portion of the lipid does the protein bind to, the head group or the acyl chain, given the mutation?
Identify basic structure of the 8 types of membrane proteins shown below Understand how primary structure (e.g., regional hydrophobicity and hydrophilicity) allows proper membrane interaction/association. Compare/contrast the degree to which proteins are attached to membranes. Which have more lateral movement? 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 generally occur? Why? lipid bilayer A La s *****P & de www CYTOSOL COOH NH₂ cccccce 6
Which of the following protein should coat a vesicle that contains a receptor that can recognize the proteins having the following amino acid sequence Lysine (K), Aspartic Acid (D), Glutamic acid (E), Leucine (L)? Group of answer choices COP I COP II All of the other/above
b) Cellular membranes are generally found in environments that contain lots of water. Draw a diagram of what the phospholipid bilayer of a plasma membrane would look like if it were placed in a hydrophobic environment. (**Note that you only have to draw the phospholipid bilayer, you don't have to draw the other major components again as you did in part a) poned In salt wer (ho byorout obods f.Cplan why sctive tnsport is requind in tive tre nolaib beisio c) What part or parts of a cellular membrane play(s) a role in determining the fluidity of the membrane? pslomlo below
I think it works by freezing the bilayer of the membrane and then hitting it sharply with a diamond knife. The sharp hit creates a fracture in the membrane and usually that fracture follows the plane between the two layers of the membrane lipid.

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