Here’s a Ramachandran plot. Give the dihedral angles--phi and psi--that are characteristic of a left handed helix. This image represents a Ramachandran plot, a tool used in structural biology to visualize dihedral angles ψ (psi) and φ (phi) of amino acid residues in protein structure. ### Explanation of the Diagram:- **Axes**: - The x-axis represents φ (phi) angles, ranging from -180° to 180°. - The y-axis represents ψ (psi) angles, also ranging from -180° to 180°.- **Regions**: 1. **Anti-parallel β-sheet**: Positioned in the top-left, this region (green area) represents dihedral angles commonly found in anti-parallel β-sheets. 2. **Parallel β-sheet**: Slightly below the anti-parallel region. 3. **Collagen helix**: Located towards the top-right quadrant. 4. **Left-handed α-helix**: Found in the right area of the plot, indicating dihedral angles typical for left-handed α-helices. 5. **Right-handed α-helix**: Situated in the bottom-left, representing angles typical of right-handed α-helices, which are very common in proteins.- **Color Coding**: - **Green areas**: The allowed regions where the structures are most stable. - **Yellow areas**: Less favored conformations.This plot is essential for understanding protein secondary structure and helps in predicting the conformational possibilities of proteins.

Ramachandran plot: This is plot between torsional angles phi and psi that are present between…

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Biochemistry

Here’s a Ramachandran plot. Give the dihedral angles--phi and psi--that are characteristic of a left handed helix.

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Question

Here’s a Ramachandran plot. Give the dihedral angles--phi and psi--that are characteristic of a left handed helix.

This image represents a Ramachandran plot, a tool used in structural biology to visualize dihedral angles ψ (psi) and φ (phi) of amino acid residues in protein structure.

### Explanation of the Diagram:

- **Axes**:
- The x-axis represents φ (phi) angles, ranging from -180° to 180°.
- The y-axis represents ψ (psi) angles, also ranging from -180° to 180°.

- **Regions**:
1. **Anti-parallel β-sheet**: Positioned in the top-left, this region (green area) represents dihedral angles commonly found in anti-parallel β-sheets.
2. **Parallel β-sheet**: Slightly below the anti-parallel region.
3. **Collagen helix**: Located towards the top-right quadrant.
4. **Left-handed α-helix**: Found in the right area of the plot, indicating dihedral angles typical for left-handed α-helices.
5. **Right-handed α-helix**: Situated in the bottom-left, representing angles typical of right-handed α-helices, which are very common in proteins.

- **Color Coding**:
- **Green areas**: The allowed regions where the structures are most stable.
- **Yellow areas**: Less favored conformations.

This plot is essential for understanding protein secondary structure and helps in predicting the conformational possibilities of proteins.

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