Table of contents

1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

4. Protein Structure

Atypical Ramachandran Plots

Biochemistry

4. Protein Structure

Atypical Ramachandran Plots

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Multiple Choice

The Ramachandran plot of Leu most likely resembles which of the following plots?

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Verified step by step guidance

Understand that a Ramachandran plot is a way to visualize dihedral angles ψ against φ of amino acid residues in protein structure.

Recognize that leucine (Leu) is a non-polar, aliphatic amino acid, which typically allows for a wide range of φ and ψ angles due to its flexible side chain.

Identify the common regions in a Ramachandran plot where non-glycine, non-proline residues are found: the beta-sheet region (around φ = -135°, ψ = 135°) and the right-handed alpha-helix region (around φ = -60°, ψ = -45°).

Analyze the provided plots to determine which one shows dense regions in these common areas for leucine.

Select the plot that shows the most populated regions corresponding to the typical allowed regions for leucine, which are the beta-sheet and right-handed alpha-helix regions.