Biochemistry
8th Edition
ISBN: 9781464126109
Author: Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr., Lubert Stryer
Publisher: W. H. Freeman
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Question
Chapter 2, Problem 23P
Interpretation Introduction
Interpretation:
There are number of proteins with hydrophilic exteriors as well as hydrophobic interiors. Whether due to this structure of protein it is embedded in the membrane’s hydrophobic interior or not needs to be explained.
Concept introduction:
Amino acids are organic compounds containing amino as well as
Here, R group is different for different amino acids. This group can be acidic, basic or neutral.
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Check out a sample textbook solutionStudents have asked these similar questions
Part I. Protein structure
You have the toy model for a protein in the water (W) environment
of the cell shown.
a) How many residues (amino acids) does this toy protein have?
b) How many hydrophobic (H), hydrophilic (P), and charged (C)
residues are there?
c) Sketch the molecule on your answer sheet and then show the
positions of the favorable C-C (charge-charge) interactions
on the figure.
[Membrane Proteins] Based on the figure provided, What classification best describes G-proteins?
Integral Membrane Proteins
Peripheral Membrane Proteins
Lipid-Anchored Proteins
Soluble Cytosolic Proteins
Most proteins have hydrophilic exteriors and hydrophobic interiors. Would you expect this structure to apply to proteins embedded in the hydrophobic interior of a membrane? Explain.
Chapter 2 Solutions
Biochemistry
Ch. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Prob. 9PCh. 2 - Prob. 10P
Ch. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - Prob. 16PCh. 2 - Prob. 17PCh. 2 - Prob. 18PCh. 2 - Prob. 19PCh. 2 - Prob. 20PCh. 2 - Prob. 21PCh. 2 - Prob. 22PCh. 2 - Prob. 23PCh. 2 - Prob. 24PCh. 2 - Prob. 25PCh. 2 - Prob. 26PCh. 2 - Prob. 27PCh. 2 - Prob. 28PCh. 2 - Prob. 29PCh. 2 - Prob. 30PCh. 2 - Prob. 31PCh. 2 - Prob. 32PCh. 2 - Prob. 33PCh. 2 - Prob. 34P
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- 18 The image below shows the different interactions responsible for the spontaneous folding of a protein molecule. Identify which interactions are involved for each labelled region 0-H H CH,OH CH, NH, 0 B O-H--OO CH, CH₂ A B D C A यह मह CH CH₂COOH C H CH, CH, CH, CH H--O=C D T (CHJANH, - interactions ion-dipole interaction Hydrogen bonding Hydrophobic interactions Disulfide bonds lon-ion interaction 18arrow_forwardOe. Lactose, maltose 17 Water can be converted from the liquid status to gas/vapor by high temperature (100°C), which of the following are responsible for increasing the boiling point of water molecule? ut of Select one: O a. Covalent bond and adhesion nestion O b. Hydrogen bond and cohesion O c. Hydrogen bond and salt formation O d. lonization and cohesion O e. Covalent bond and adhesion Protein conformation depends on the... Select one: of O a. R groups of the composing amino acids O b. Carboxyl group COOH ion O c. Number of peptide bonds O d. Phosphate group O e. Amino group NH2arrow_forward10 This level of protein structure involves regular patterns within a protein chain held by hydrogen bonding. Choose the correct level of protein structure: primary secondary tertiary quaternaryarrow_forward
- Thinking about cell membranes. a) The fatty acid tails of the phospholipids that make up cell membranes canbe either saturated or unsaturated. Which type of lipid will lead to a membranewith more mechanical strength? Explain your answer. b) One difference between bacterial and eukaryotic membranes is the presenceof cholesterol in eukaryotic membranes. What is the structure of cholesterol?Explain how adding cholesterol to a phospholipid membrane will affect thestability of the membrane. c) “Anammox” bacteria are unique in that they can perform anaerobic ammoniaoxidation, or the production of nitrogen gas from ammonia (Damasté et al. Nature2002, 419, 708.). Intermediates along this reaction pathway include hydrazine(N2H4) and hydroxylamine (NH2OH), both of which are extremely toxic to the cell.The ammonia oxidation reactions are believed to occur inside a membrane-bound structure within the cell called the “anammoxosome.” The structure of oneof the lipids of the anammoxosome is shown…arrow_forwardgure 3.1 Animation: The Plasma Membrane Peripheral protein Cholesterol Integral protein Glycoprotein Hydrophilic head Hydrophobic tail Suhmitarrow_forwardMAIN IDEA: Proteins are complex polymers. They have primary, secondary, tertiary, and quaternary levels of structure, which contribute to their functions. Some proteins require non-protein components, called prosthetic groups, to function properly. 3. Order the following elements of protein from simplest to most complex: protein, peptide, polypeptide, R-group, amino acid. T MELarrow_forward
- (a). Phospholipids are amphipathic molecules which have hydrophilic and hydrophobic regions. Explain how this feature benefits the cell. (Give ONE reason) (2) (b). Give ONE difference between a saturated phospholipid and an unsaturated phospholipid. (2)arrow_forwardProtein Concept Map Add these terms to your concept map should include these concepts and details: Structure (functional groups, shape); Monomer; Linkage; Properties; Functions; Key terms from the Partial List of Key Terms from the Minds Partial List of Key Terms essential amino acid amino acid side group/R-group peptide bond polypeptide receptor neurotransmitter hormone secondary structure tertiary structure quaternary structure fair test hydrophobic hydrophilic intermolecular force of attractionarrow_forward9. Although proteins rarely if ever flip flop across a membrane, distribution of membrane lipids between the membrane leaflets is not absolute except in the case of glycolipids. Why are glycosylated lipids less likely to flip-flop?arrow_forward
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