Domanda del libro di testo
How do the following interactions help to stabilize the tertiary and quaternary structure of a protein? Give an example of a pair of amino acids that could give rise to each interaction.
b. Disulfide bonds
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Ch.18 Amino Acids and Proteins
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
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TOC.tableOfContents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187Non è quello che usi tu?Cambia libro di testo
Capitolo 18, Problema 89
Give an example of a protein that has quaternary structure. How many polypeptide chains are present in this protein?
Guida verificata passo dopo passo1
Step 1: Understand the concept of quaternary structure. Proteins with quaternary structure are composed of two or more polypeptide chains (subunits) that are held together by non-covalent interactions or, in some cases, covalent bonds. These subunits work together to form a functional protein complex.
Step 2: Identify an example of a protein with quaternary structure. Hemoglobin is a well-known example of a protein with quaternary structure. It is responsible for transporting oxygen in the blood.
Step 3: Determine the number of polypeptide chains in hemoglobin. Hemoglobin consists of four polypeptide chains: two alpha (α) chains and two beta (β) chains.
Step 4: Recognize the significance of the quaternary structure in hemoglobin. The arrangement of the four subunits allows hemoglobin to efficiently bind and release oxygen molecules, demonstrating the functional importance of quaternary structure.
Step 5: Conclude that hemoglobin is an example of a protein with quaternary structure, and it contains four polypeptide chains in total.
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Quaternary Structure
Quaternary structure refers to the highest level of protein organization, where multiple polypeptide chains, known as subunits, come together to form a functional protein complex. This structure is stabilized by various interactions, including hydrogen bonds, ionic bonds, and hydrophobic interactions. An example of a protein with quaternary structure is hemoglobin, which consists of four polypeptide chains.
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Percorso guidato
3:26
Quaternary Protein Structure Concept 1
Polypeptide Chains
Polypeptide chains are long sequences of amino acids linked by peptide bonds, forming the primary structure of proteins. The number of polypeptide chains in a protein can vary, and in the case of quaternary structure, multiple chains interact to create a functional unit. For instance, hemoglobin has two alpha and two beta polypeptide chains, totaling four chains.
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3:10Intro to Electron Transport Chain Concept 1
Protein Functionality
The functionality of a protein is closely tied to its structure, including its quaternary arrangement. The specific interactions between polypeptide chains can affect the protein's stability, activity, and ability to bind to other molecules. Understanding how these structures contribute to function is crucial in fields like biochemistry and molecular biology, as it helps explain how proteins perform their roles in biological systems.
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Percorso guidato
02:16Logarithmic Functions
Pratica correlata
Domanda del libro di testo
Explain how a protein is denatured by the following:
a. Heat
Domanda del libro di testo
How do the following noncovalent interactions help to stabilize the tertiary and quaternary structure of a protein? Give an example of a pair of amino acids that could give rise to each interaction.
a. Hydrophobic interactions
914
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Domanda del libro di testo
What level of protein structure is determined by the following:
b. Hydrogen bonds between backbone carbonyl oxygen atoms and hydrogen atoms attached to backbone nitrogen atoms?
826
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Domanda del libro di testo
Explain how a protein is denatured by the following:
c. Organic solvents
824
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Domanda del libro di testo
Explain how a protein is denatured by the following:
b. Strong acids