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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2:55 minutes

Problem 72b

Textbook Question

Identify the level of protein structure associated with each of the following:
b. disulfide bridge

Verified step by step guidance

Understand that proteins have four levels of structure: primary, secondary, tertiary, and quaternary. Each level describes a different aspect of the protein's organization.

Recall that a disulfide bridge is a covalent bond formed between the sulfur atoms of two cysteine amino acids. This bond contributes to the stabilization of the protein's three-dimensional shape.

Recognize that the tertiary structure of a protein refers to the overall three-dimensional folding of a single polypeptide chain, including interactions such as hydrogen bonds, ionic bonds, hydrophobic interactions, and disulfide bridges.

Conclude that the disulfide bridge is specifically associated with the tertiary structure of a protein because it helps stabilize the folded shape of the polypeptide chain.

Note that disulfide bridges can also play a role in quaternary structure if they form between cysteine residues on different polypeptide chains, stabilizing the overall protein complex.

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Key Concepts

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

Protein Structure Levels

Proteins have four levels of structure: primary, secondary, tertiary, and quaternary. Each level represents a different aspect of protein organization, from the sequence of amino acids (primary) to the overall three-dimensional shape (tertiary) and the assembly of multiple polypeptide chains (quaternary). Understanding these levels is crucial for analyzing protein function and stability.

Disulfide Bridges

Disulfide bridges are covalent bonds formed between the sulfur atoms of cysteine residues in a protein. These bonds play a significant role in stabilizing the tertiary structure of proteins by linking different parts of the polypeptide chain, thus contributing to the protein's overall shape and functionality.

Tertiary Structure

The tertiary structure of a protein refers to its overall three-dimensional shape, which is determined by interactions among various side chains (R groups) of the amino acids. This structure is crucial for the protein's function, as it influences how the protein interacts with other molecules, including substrates and inhibitors.

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Identify the level of protein structure associated with each of the following:b. disulfide bridge

Key Concepts

Protein Structure Levels

Disulfide Bridges

Tertiary Structure

Watch next

Identify the level of protein structure associated with each of the following:
b. disulfide bridge