Essentials of Genetics (9th Edition) - Standalone book
9th Edition
ISBN: 9780134047799
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino
Publisher: PEARSON
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Chapter 13, Problem 10PDQ
Summary Introduction
To review:
The level of protein organization of hemoglobin protein if it is a tetramer of two alpha and two beta-chains.
Introduction:
Protein molecules are made up of amino acid as the monomer units. The kind of amino acids that form a polypeptide chain determine the charge of the protein thus formed and also its shape. This is because amino acid residues help in protein folding by the formation of bonds such hydrogen bonds and disulfide bridges. Protein folding is important for the protein to carry out its function. A misfolded protein is rendered useless. Hemoglobin is a protein of the red blood cells that carries oxygen to different tissues of the body.
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Hemoglobin is a tetramer consisting of two a and two b chains. What level of protein structure is described in the above statement?
Hemoglobin is a tetramer consisting of two α and two β chains.What level of protein structure is described in this statement?
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Chapter 13 Solutions
Essentials of Genetics (9th Edition) - Standalone book
Ch. 13 - CASE STUDY | Crippled ribosomes Diamond Blackfan...Ch. 13 - CASE STUDY | Crippled ribosomes Diamond Blackfan...Ch. 13 - Prob. 3CSCh. 13 -
HOW DO WE KNOW?
1. In this chapter, we focused on...Ch. 13 - Review the Chapter Concepts list on p. 238. These...Ch. 13 - List and describe the role of all molecular...Ch. 13 - Contrast the roles of tRNA and mRNA during...Ch. 13 - Francis Crick proposed the adaptor hypothesis for...Ch. 13 -
6. During translation, what molecule bears the...Ch. 13 - Summarize the steps involved in charging tRNAs...
Ch. 13 - Each transfer RNA requires at least four specific...Ch. 13 -
9. Explain why the one-gene:one-enzyme hypothesis...Ch. 13 - Prob. 10PDQCh. 13 - Prob. 11PDQCh. 13 - Prob. 12PDQCh. 13 - Assuming that each nucleotide is 0.34 nm long in...Ch. 13 - Review the concept of colinearity in Section 12.5...Ch. 13 -
15. In your opinion, which of the four levels of...Ch. 13 -
16. List and describe the function of as many...Ch. 13 - How does an enzyme function? Why are enzymes...Ch. 13 -
18. Shown in the following table are several...Ch. 13 -
19. Three independently assorting genes are known...Ch. 13 -
20. How would the results in cross (a) of Problem...Ch. 13 - A series of mutations in the bacterium Salmonella...Ch. 13 -
22. The emergence of antibiotic-resistant strains...
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- How does sickle cell hemoglobin differ from normal hemoglobin at the quaternary level of protein structure (the sum of all the folded protein chains)?arrow_forwardWhat level of protein structure refers to corkscrews or sheets formed due to hydrogen bonding within a single polypeptide?arrow_forwardA protein with a quaternary structure is a multidomain protein. Is this always correct? Explain.arrow_forward
- Globular proteins are typically constructed from several layers of secondary structure, with a hydrophobic core and a hydrophilic surface. Is this true for a fibrous protein such as keratin?arrow_forwardthe sequence of amino acids in a protein is known as the secondary structure true or false?arrow_forwardGenerally speaking, what two considerations determine whether a specific dihedral angle will be permitted to exist in a protein?arrow_forward
- The amide linkages of proteins are referred to as________________________.arrow_forwardWhat level of protein structure is determined by the following:(a) Peptide bonds between amino acids?(b) Hydrogen bonds between backbone carbonyl oxygen atoms and hydrogen atoms attached to backbone nitrogen atoms?(c) R group interactions that may involve Van der Waalsforces, ionic interactions, or hydrogen bonds?arrow_forwardWhy is the ionic bond between, say, the side chain of lysine and the side chain of glutamic acid stronger in the hydrophobic interior of a protein than in aqueous solvent (water)?arrow_forward
- For the protein given in the attached picture: Write the name of these 5 amino acids corresponding to their abbreviation of 3 letters. Describe precisely how the functional groups in the amino acids are involved in bonding between two successive amino acids in the protein.arrow_forwardIn general, proteins can be classified into 3 different groups. Name and give a short description of each type and how they are distinct from one another. Provide an example of macromolecule or other complex structure representing each of the three types.arrow_forwardWhat structural features does a sphingolipid have in common with proteins? Are there functional similarities?arrow_forward
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