Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

18. Amino Acids and Proteins

Summary of Protein Structure

GOB Chemistry

18. Amino Acids and Proteins

Summary of Protein Structure

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Problem 30c

Textbook Question

For each of the conjugated proteins described, identify to which class of conjugated protein it belongs.
c. Phosphate groups are attached to this protein.

Verified step by step guidance

Understand the concept of conjugated proteins: Conjugated proteins are proteins that consist of a protein part (called the apoprotein) and a non-protein component (called the prosthetic group). The classification of conjugated proteins depends on the type of prosthetic group attached.

Identify the prosthetic group in the given problem: The problem states that phosphate groups are attached to the protein. This indicates that the prosthetic group is a phosphate group.

Recall the class of conjugated proteins associated with phosphate groups: Proteins with phosphate groups as their prosthetic group are classified as phosphoproteins.

Relate the information to the classification: Since the protein described in the problem has phosphate groups attached, it belongs to the class of phosphoproteins.

Conclude the classification: Based on the analysis, the protein described is a phosphoprotein, as its prosthetic group is a phosphate group.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Conjugated Proteins

Conjugated proteins are complex molecules formed by the combination of a protein with a non-protein component, known as a prosthetic group. These non-protein components can include carbohydrates, lipids, or inorganic molecules, which contribute to the protein's function and properties. Understanding the classification of conjugated proteins is essential for identifying their roles in biological systems.

Phosphorylation

Phosphorylation is a biochemical process involving the addition of phosphate groups to a protein, which can alter the protein's function, activity, or localization. This modification is crucial in regulating various cellular processes, including signal transduction and metabolic pathways. Proteins that undergo phosphorylation are often classified as phosphoproteins, a specific type of conjugated protein.

Classes of Conjugated Proteins

Conjugated proteins can be classified into several categories based on their prosthetic groups. Common classes include glycoproteins (with carbohydrate groups), lipoproteins (with lipid components), and metalloproteins (with metal ions). Identifying the class of a conjugated protein, such as one modified by phosphate groups, helps in understanding its biological function and interactions within the cell.

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Related Practice

Textbook Question

Determine whether each of the following statements describes the primary, secondary, tertiary, or quaternary structure of a protein.

d. Amino acids react in a condensation reaction to form a peptide bond.

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Textbook Question

Insulin is a protein hormone that functions as two polypeptide chains whose amino acid sequences are as follows:

A chain: GIVEQCCTSICSLTQLENYCN

B chain: FVNQHLCGDHLVEALYLV CGERGFFYTPKT

b. Considering the amino acid sequences, suggest how these two polypeptide chains might be held together in an active insulin molecule.

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Textbook Question

Explain how a protein is denatured by the following:

c. Organic solvents

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Textbook Question

For each of the conjugated proteins described, identify to which class of conjugated protein it belongs.

b. Ionized zinc is attached to this protein so the protein can function.

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Textbook Question

What level of protein structure is determined by the following:

a. Peptide bonds between amino acids?

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Textbook Question

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?

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Textbook Question

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

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Multiple Choice

Determine which of the following statements describes a tertiary structure of a protein.

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